02427nas a2200241 4500008004100000022001400041245013100055210006900186260006900255300001200324490000800336520150300344653002001847653002301867653002601890653001101916100002801927700002701955700002601982700002202008700002502030856013002055 2009 eng d a0254-058400aTin-silicalite-1: synthesis by dry gel conversion, characterization and catalytic performance in phenol hydroxylation reaction0 aTinsilicalite1 synthesis by dry gel conversion characterization  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcMAR a344-3490 v1143 a

Tin-silicalite-1 (Sn-MFI) has been successfully synthesized by dry gel conversion (DGC) method. The influence of various synthesis parameters such as crystallization time, temperature, water content at the bottom of autoclave, molar ratios of (TPA)(2)O/SiO(2) and SiO(2)/SnO(2) in dry gel on the crystallization kinetics and physico-chemical properties of Sn-MFI materials has been investigated. Powder-X-ray diffraction (XRD),XPS,AAS, DRUV-vis and SEM techniques were employed as characterization tools. Time-dependent studies revealed that, the progressive crystallization of Sn-MFI depend not only on the synthesis time but also on the other various synthesis parameters. Increase in the crystallization temperature, water content at bottom of autoclave (TPA)(2)O/SiO(2) and SiO(2)/SnO(2) molar ratios in dry gel resulted in the lowering of overall crystallization period. A good correspondence between the chemical composition of the surface and the bulk indicated the uniform distribution of Sn(4+) ions. The presence of these ions in tetrahedral coordination has been indicated by DRUV-vis spectral studies. Although, not better but comparable activity has been shown by Sn-MFI prepared by dry gel conversion method with Sn-MFI prepared by conventional hydrothermal crystallization method in the hydroxylation of phenol reaction. Increase in concentration of isolated Sn(4+) ions led to increase in phenol conversion and H(2)O(2) efficiency. (c) 2008 Elsevier B.V. All rights reserved.

10acrystallisation10aDry gel conversion10amicroporous materials10aSn-MFI1 aNiphadkar, Prashant, S.1 aKotwal, Mehejabeen, S.1 aDeshpande, Shilpa, S.1 aBokade, Vijay, V.1 aJoshi, Praphulla, N. uhttps://library.ncl.res.in/content/tin-silicalite-1-synthesis-dry-gel-conversion-characterization-and-catalytic-performance-001084nas a2200181 4500008004100000022001400041245010100055210006900156260008400225300001200309490000700321520034500328100002100673700002800694700002500722700002900747856012600776 2010 eng d a0366-702200aHydroxyalkylation of p-Cresol to 2,2 `-methylenebis(4-methylphenol) using Sn/Si-MCM-41 catalysts0 aHydroxyalkylation of pCresol to 22 methylenebis4methylphenol usi a1-5 KANDA-SURUGADAI CHIYODA-KU, TOKYO, 101-8307, JAPANbCHEMICAL SOC JAPANcFEB a126-1270 v393 a

Sn/Si-MCM-41 has exhibited an excellent catalytic activity [70% product yield with 88% selectivity to 2,2'-methylenebis(4-methylphenol)] for the selective hydroxyalkylation of p-cresol. At equal level of Sn loading, Sn/Si-MCM-41 prepared by direct hydrothermal synthesis showed higher activity than Sn-impregnated Si-MCM-41 catalyst.

1 aGarade, Ajit, C.1 aNiphadkar, Prashant, S.1 aJoshi, Praphulla, N.1 aRode, Chandrashekhar, V. uhttps://library.ncl.res.in/content/hydroxyalkylation-p-cresol-22-methylenebis4-methylphenol-using-snsi-mcm-41-catalysts-001826nas a2200265 4500008004100000022001400041245014000055210006900195260007300264300001200337490000800349520081600357653001501173653002001188653003801208653003101246653001401277653001101291100002801302700002101330700002401351700002901375700002501404856013101429 2010 eng d a1387-181100aMicro-/meso-porous stannosilicate composites (Sn-MFI/MCM-41) via two-step crystallization process: process parameter-phase relationship0 aMicromesoporous stannosilicate composites SnMFIMCM41 via twostep aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcDEC a115-1250 v1363 a

Sn-MFI/MCM-41 composite material was successfully synthesized by monitoring the re-crystallization time in a simple two-step crystallization process. The length of period allowed for the recrystallization of the precursor species was found to be a controlling factor to achieve either the end members viz. Sn-MCM-41 and Sn-MFI or Sn-MFI/MCM-41 composite material. Powder XRD, FTIR, SEM, TEM, nitrogen sorption measurement, DRUV-vis and hydroxyalkylation of p-cresol reaction were used as the characterization tools. Attempts were also made to establish the relationship between type of phase formed and the process parameters such as aging time, re-crystallization temperature, time and molar ratios of TPAOH/SiO(2), CTMABr/SiO(2) and SiO(2)/SnO(2) in the gel. (C) 2010 Elsevier Inc. All rights reserved.

10acomposites10aCrystallization10aMicro-/meso-porous stannosilicate10ap-Cresol hydroxyalkylation10aSn-MCM-4110aSn-MFI1 aNiphadkar, Prashant, S.1 aGarade, Ajit, C.1 aJha, Ratnesh, Kumar1 aRode, Chandrashekhar, V.1 aJoshi, Praphulla, N. uhttps://library.ncl.res.in/content/micro-meso-porous-stannosilicate-composites-sn-mfimcm-41-two-step-crystallization-process-002723nas a2200277 4500008004100000022001400041245016200055210006900217260007300286300001000359490000800369520166100377653002402038653003202062653001902094653002102113653001902134100002902153700002202182700002802204700002502232700002602257700002102283700002202304856011902326 2013 eng d a0926-860X00aCatalytic upgrading of renewable levulinic acid to ethyl levulinate biodiesel using dodecatungstophosphoric acid supported on desilicated H-ZSM-5 as catalyst0 aCatalytic upgrading of renewable levulinic acid to ethyl levulin aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJUN a90-980 v4603 a

Levulinic acid (LA) is considered as a renewable platform chemical and can be used for the synthesis of variety of important fuels and chemicals. In particular, its esterification with ethanol produces ethyl levulinate (EL) would be green process, as it can be used as diesel miscible biofuel (DMB), preventing global warming by decreasing atmospheric CO2. This study explores the use of modified H-ZSM-5 by desilication viz.; DH-ZSM-5 and dodecatungstophosphoric acid (DTPA) loaded on DH-ZSM-5 for esterification of LA with ethanol aiming to EL. Different degree of desilication of H-ZSM-5 was performed by using aq. NaOH (0.2-1.5 M) at 338 K for 30 min and then DTPA was loaded on these desilicated H-ZSM-5 (DH-ZSM-5) support. H-ZSM-5, DH-ZSM-5 and DTPA on these DH-ZSM-5 samples were characterized by powder x-ray diffraction (XRD), N-2 adsorption-desorption, pyridine chemisorbed IR spectroscopy, Temperature Programmed Ammonia Desorption (TPAD). The increase in conversion of levulinic acid was observed from 28% to 94% with increase of DTPA loading from 0% to 15%. The increased LA conversion may be due to increase in total acidity from 43.14% to 84.31%. The use of DH-ZSM-5 as support for deposition of DTPA may be reported for the first time. The present work also extended to optimize process parameters such as DTPA loading on DH-ZSM-5, catalyst to LA ratio, LA to ethanol molar ratio, speed of agitation, particle size reaction temperature and catalyst reusability. Kinetic study based on pseudo-homogeneous (P-H) model is also presented. The experimental results follow second order kinetics. (C) 2013 Elsevier B.V. All rights reserved.

10adesilicated H-ZSM-510aDTPA on desilicated H-ZSM-510aEsterification10aethyl levulinate10alevulinic acid1 aNandiwale, Kakasaheb, Y.1 aSonar, Shilpa, K.1 aNiphadkar, Prashant, S.1 aJoshi, Praphulla, N.1 aDeshpande, Shilpa, S.1 aPatil, Vilas, S.1 aBokade, Vijay, V. uhttps://library.ncl.res.in/content/catalytic-upgrading-renewable-levulinic-acid-ethyl-levulinate-biodiesel-using-002442nas a2200241 4500008004100000022001400041245010500055210006900160260007300229300001200302490000800314520152400322653002101846653001301867653003301880653002401913653003401937100002401971700002801995700002602023700002502049856012602074 2013 eng d a0926-860X00aDehydrogenation of cyclohexanol over Cu/Al2O3 catalysts prepared with different precipitating agents0 aDehydrogenation of cyclohexanol over CuAl2O3 catalysts prepared  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcOCT a421-4290 v4673 a

Dehydrogenation of cyclohexanol over Cu/Al2O3 catalysts (molar Cu:Al = 1:1) prepared by reduction of mixed oxide precursors synthesized using different precipitating agents viz, potassium carbonate, tetraalkyl ammonium hydroxides (TAAOHs) and urea was investigated. In order to assess the efficacy of TAAOH further, the chain length of tetraalkyl ammonium cations was also varied and the resulted catalysts were evaluated for their catalytic performance. The catalysts were characterized by powder X-ray diffraction, low temperature nitrogen adsorption, temperature programmed desorption of ammonia and UV-visible diffuse reflectance spectroscopy. The dependence of the catalyst performance on the precipitating agent employed during its synthesis has been clearly demonstrated. The use of TAAOH as precipitating agent led to the formation of a catalyst with better catalytic activity than those prepared using potassium carbonate and urea. Further improvement in the catalytic performance was observed when TAAOH with longer alkyl chain ammonium cation was used. The optimum catalyst prepared by reduction of mixed oxide precursor synthesized using tetrapropyl ammonium hydroxide as precipitating agent, showed highest cyclohexanol conversion (81.5%) and cyclohexanone selectivity (79.6%) at 250 degrees C on account of higher Cu+/Cu-0 ratio, well dispersed copper, higher surface area and lower total acidity with higher contribution of sites with moderate strength. (C) 2013 Elsevier B.V. All rights reserved.

10aCharacterization10aCu/Al2O310aCyclohexanol dehydrogenation10aPrecipitating agent10aTetraalkyl ammonium hydroxide1 aTangale, Nilesh, P.1 aNiphadkar, Prashant, S.1 aDeshpande, Shilpa, S.1 aJoshi, Praphulla, N. uhttps://library.ncl.res.in/content/dehydrogenation-cyclohexanol-over-cual2o3-catalysts-prepared-different-precipitating-002179nas a2200265 4500008004100000022001400041245014500055210006900200260007400269300000900343490000800352520117700360653001501537653001801552653001901570653002101589653002801610100002201638700002101660700002801681700002501709700002601734700002401760856012901784 2013 eng d a0049-697900aEnhanced dual-effect of adsorption and photodegradation of SiO2 embedded TiO2 hybrid catalyst for improved decolourization of methylene blue0 aEnhanced dualeffect of adsorption and photodegradation of SiO2 e aVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDSbSPRINGERcSEP a17260 v2243 a

Dual-effects of adsorption and photodegradation over titania, silica embedded titania, silica and commercial Degussa P-25 samples were studied for the decolourization of methylene blue in aqueous medium. Silica embedded titania and silica were prepared using inexpensive polymeric version of ethyl silicate as a source of silica. Catalysts were characterized by X-ray diffraction, scanning electron microscopy, UV-Vis spectroscopy and low temperature (77 K) nitrogen adsorption measurements. Among all the catalysts, silica embedded titania has exhibited faster decolourization of methylene blue solution on account of the enhancement of adsorption followed by degradation. An amount of the catalyst and the initial dye concentration of MB solution were found to influence the decolourization activity. Compared to titania catalyst, silica embedded titania and Degussa P-25 have shown the red shift in their UV-Vis spectrum. The experimental data of the reaction fitted well to the pseudo first order kinetic model. In present studies, the adsorption mechanism for the decolourization of MB solution was found to be applicable for an intra particle diffusion model.

10aAdsorption10akinetic model10aMethylene blue10aPhotodegradation10aSilica embedded titania1 aSonar, Shilpa, K.1 aWagh, Reshma, V.1 aNiphadkar, Prashant, S.1 aJoshi, Praphulla, N.1 aDeshpande, Shilpa, S.1 aAwate, Shobhana, V. uhttps://library.ncl.res.in/content/enhanced-dual-effect-adsorption-and-photodegradation-sio2-embedded-tio2-hybrid-catalyst-002418nas a2200229 4500008004100000022001400041245013700055210006900192260006700261300001400328490000700342520151900349653002401868653001901892653002101911653001901932100002901951700002801980700002602008700002202034856013202056 2014 eng d a0268-257500aEsterification of renewable levulinic acid to ethyl levulinate biodiesel catalyzed by highly active and reusable desilicated H-ZSM-50 aEsterification of renewable levulinic acid to ethyl levulinate b a111 RIVER ST, HOBOKEN 07030-5774, NJ USAbWILEY-BLACKWELLcOCT a1507-15150 v893 a

BACKGROUNDIn the near future, fossil fuel will have limitations in terms of availability and also great concerns over its environmental impact. New routes and related technologies based on renewable feedstocks can overcome most of these problems associated with fossil fuel. Among current biodiesel sources, ethyl levulinate (EL) biodiesel obtained from catalytic esterification of renewable levulinic acid (LA) with ethanol has received a great deal of attention. The use of desilicated H-ZSM-5 (DH-ZSM-5) as heterogeneous acid catalyst for EL biodiesel production in a closed system (under autogeneous pressure) was studied. RESULTSThe effect of reaction parameters such as ethanol to LA molar ratio (4:1 to 10:1), catalyst to LA ratio (0.10-0.25), speed of agitation (100-400rpm), particle size (53-355 mu m), reaction temperature (363-403K) and reaction time (7h) was investigated to maximize LA conversion. CONCLUSIONLevulinic acid conversion reached 95% over DH-ZSM-5 and the catalyst was reusable for up to six cycles. This LA conversion and the catalyst reusability values are higher than others reported in the literature. A pseudo-homogeneous (P-H) kinetic model indicated that reaction rate constants increased with increasing molar ratio, catalyst to LA ratio and reaction temperature. The activation energy decreased from 73.14 to 21.08 kJ mol(-1) when increasing the catalyst to LA ratio from 0.10 to 0.25, which implies a kinetically controlled reaction. (c) 2013 Society of Chemical Industry

10adesilicated H-ZSM-510aEsterification10aethyl levulinate10alevulinic acid1 aNandiwale, Kakasaheb, Y.1 aNiphadkar, Prashant, S.1 aDeshpande, Shilpa, S.1 aBokade, Vijay, V. uhttps://library.ncl.res.in/content/esterification-renewable-levulinic-acid-ethyl-levulinate-biodiesel-catalyzed-highly-active-002581nas a2200253 4500008004100000022001400041245014900055210006900204260006900273300001200342490000800354520161400362653001501976653002301991653003002014653002402044653002302068653001802091100002202109700002802131700001702159700002502176856012602201 2014 eng d a0254-058400aPreparation and characterization of porous fly ash/NiFe2O4 composite: promising adsorbent for the removal of congo red dye from aqueous solution0 aPreparation and characterization of porous fly ashNiFe2O4 compos aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcNOV a371-3790 v1483 a

A series of fly ash/NiFe2O4 composites were prepared using fly ash and aqueous solutions of Ni, Fe nitrate salts and NaOH by co-precipitation followed by calcination method. The % mass ratio of fly ash: NiFe2O4 was varied in the range of 0:100 to 100:0. Samples were characterized by powder XRD, SEM, FTIR and N-2 adsorption-desorption measurements. These samples were further evaluated for their adsorptive performance in removal of Congo red (CR) dye from an aqueous solution. In all the composites, spinel nickel ferrite phase was found to be capable to get anchored with the fly ash surface and exhibited more crystalline nature as compared to pure NiFe2O4 phase. The BET surface area and porous character of the composite were found to increase with the decrease in the contribution of the fly ash, reach to maximum and then decreases on further decrease in fly ash. The composite having % mass ratio of fly ash: NiFe2O4 = 50:50 exhibited maximum CR adsorption from the aqueous solution on account of the higher BET surface area, more porous character, favorable condition for diffusion of dye molecules and combined effect of chemisorption and physisorption. Under optimum conditions, it has shown the recyclability with adsorption capacity of the magnitude 23.33 mg g(-1), which is much higher than individual fly ash, NiFe2O4 and other composites. The sorption data provided good fit with pseudo-second order kinetic model. The analyses of the adsorption data indicated that, the Langmuir model provides better correlation with the experimental data. (C) 2014 Elsevier B.V. All rights reserved.

10aAdsorption10aComposite material10aElectron microscopy (SEM)10aInorganic compounds10apowder diffraction10aPrecipitation1 aSonar, Shilpa, K.1 aNiphadkar, Prashant, S.1 aMayadevi, S.1 aJoshi, Praphulla, N. uhttps://library.ncl.res.in/content/preparation-and-characterization-porous-fly-ashnife2o4-composite-promising-adsorbent-001810nas a2200265 4500008004100000022001400041245009000055210006900145260007100214300001200285490000600297520089200303653002301195653001801218653001101236653001801247653001001265100002501275700002101300700002501321700002801346700002501374700002901399856011601428 2014 eng d a2168-048500aSingle-pot formation of THFAL via catalytic hydrogenation of FFR over Pd/MFI catalyst0 aSinglepot formation of THFAL via catalytic hydrogenation of FFR  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcFEB a272-2810 v23 a

Furfural (FFR) was selectively hydrogenated in a single pot to tetrahydrofurfuryl alcohol (THFAL) over a Si MFI molecular sieve supported Pd catalyst. Studies on catalyst screening revealed that both the metal function and the support were critical for directing the selectivity to the ringhydrogenated product, THFAL. The structural feature of MFI as shown by XRD was completely retained in the used sample of the 3% Pd/MFI catalyst confirming its stability under reaction conditions. XRD, along with SEM characterization of the used samples, established retention of morphology of the structured silicate, suggesting a strong interaction between hexagonal porous silicate and Pd particles. The complete conversion of FFR with an enhanced selectivity of 95% to THFAL could be achieved by recycling the crude of the first hydrogenation experiment over the same 3% Pd/MFI catalyst.

10aBiomass conversion10aHydrogenation10aPd/MFI10aRecyclability10aTHFAL1 aBiradar, Narayan, S.1 aHengne, Amol, M.1 aBirajdar, Shobha, N.1 aNiphadkar, Prashant, S.1 aJoshi, Praphulla, N.1 aRode, Chandrashekhar, V. uhttps://library.ncl.res.in/content/single-pot-formation-thfal-catalytic-hydrogenation-ffr-over-pdmfi-catalyst-001745nas a2200241 4500008004100000022001400041245014400055210006900199260007900268300001200347490000700359520080600366653001301172653002501185653001001210653002901220653003101249100002401280700002201304700002801326700002501354856012401379 2016 eng d a1226-086X00aHierarchical K/LTL zeolites: synthesis by alkali treatment, characterization and catalytic performance in knoevenagel condensation reaction0 aHierarchical KLTL zeolites synthesis by alkali treatment charact a360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USAbELSEVIER SCIENCE INCcAUG a128-1360 v403 a

The hierarchical K/LTL zeolites prepared by post-synthesis modification with aqueous 1.5 M KOH solution by varying alkali volume to K/LTL zeolite (10-70 ml/g) ratios, were examined in Knoevenagel condensation. The physico-chemical properties of the catalysts were thoroughly evaluated by PXRD, ICP, CO2-TPD, XPS, N-2 adsorption/desorption and Si-29 and Al-22 MAS-NMR. Among all the samples, hierarchical K/LTL prepared by treating K/LTL with 50 ml aqueous 1.5 M KOH solution per gram of K/LTL displayed about 1.5 fold higher catalytic activity as compared to parent K/LTL, presumably because of combined effect of enhanced basicity and molecular diffusion through pore channels. (C)2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

10aBasicity10aHierarchical zeolite10aK/LTL10aKnoevenagel condensation10aMicro-mesoporous composite1 aTangale, Nilesh, P.1 aSonar, Shilpa, K.1 aNiphadkar, Prashant, S.1 aJoshi, Praphulla, N. uhttps://library.ncl.res.in/content/hierarchical-kltl-zeolites-synthesis-alkali-treatment-characterization-and-catalytic01919nas a2200169 4500008004100000245015000041210006900191260000800260300001200268490000600280520123500286100002201521700002801543700002401571700002201595856013201617 2018 eng d00aHxZr3-xPW12O40 as an insoluble and reusable heteropolyacid for highly selective dehydration of fructose to 5-hydroxymethyl fufural in DMSO system0 aHxZr3xPW12O40 as an insoluble and reusable heteropolyacid for hi cJAN a832-8360 v33 aDehydration of fructose is a way to produce an important platform chemical such as 5-hydroxymethylfurfural (HMF) which is widely used to synthesize variety of renewable chemicals and fuel. Heteropoly acid, H3PW12O40 is highly soluble strong acidic catalyst with well-defined structure. This study reports the modification of soluble heteropoly acid to insoluble and reusable heteropolyacid (HxZr3-xPW12O40 ) by exchanging with Zr and investigation of its catalytic performance in selective transformation of renewable fructose to 5-HMF in Dimethyl sulfoxide (DMSO) system. The physico-chemical properties of H(x)Zr(3-x)PW(12)O(40)were derived from Powder-XRD, NH3-TPAD and FT-IR technique. The characterization of HxZr3-xPW12O40 revealed that the Keggin structure of HPA remained intact as proton replaced by Zr. The partial exchange of Zr in H2Zr1PW12O40 catalyst resulted in an increase in acidity, however further increase of Zr above 1, acidity was found to be decreased. At optimized reaction condition, 5-HMF yield of 85% with 100% selectivity was achieved with H1Zr2 PW12O40 catalyst at much lower reaction time of 10 min than reported. The catalyst was observed to be recoverable, reusable as compared to parent H3PW12O40.1 aMulik, Nagesh, L.1 aNiphadkar, Prashant, S.1 aPandhare, Kiran, V.1 aBokade, Vijay, V. uhttps://library.ncl.res.in/content/hxzr3-xpw12o40-insoluble-and-reusable-heteropolyacid-highly-selective-dehydration-fructose-502172nas a2200181 4500008004100000022001400041245009300055210006900148260000800217300001500225490000600240520153500246100002401781700002801805700002501833700002201858856011001880 2018 eng d a2044-475300a KLTL-MCM-41 micro-mesoporous composite as a solid base for the hydrogenation of sugars 0 aKLTLMCM41 micromesoporous composite as a solid base for the hydr cDEC a 6429-64400 v83 aAn approach to the synthesis of KLTL-MCM-41 micro-mesoporous composites of varying SiO2/Al2O3 molar ratio (20-8) was designed by following green technology. The synthesis was based on the recycling of waste mother liquor containing preformed KLTL zeolite crystals and unutilized reagents. The micro-mesoporous composites consist of KLTL zeolite crystals preformed through hydrothermal treatment in the first step. In the second step, the siliceous mother liquor was transformed into mesoporous MCM-41. The physico-chemical properties of the KLTL-MCM-41 micro-mesoporous composites were determined by PXRD, ICP-OES, FTIR, CO2-TPD, Al-27 MAS-NMR, TEM-EDX, HRTEM, and N-2 adsorption-desorption measurements. The mesopores properties of the KLTL-MCM-41 composites depended on the SiO2/Al2O3 molar ratio. The characterization results led to the following conclusions with decreasing SiO2/Al2O3 molar ratio: 1) decreasing order of the mesophase, 2) decreasing wall thickness of the mesopores, and 3) decreasing BET surface area and pore volume. Al-27 MAS-NMR spectra showed that only tetrahedrally coordinated aluminium was contained in zeolite KLTL. Moreover, the total amount and the strength of the basic sites of the KLTL-MCM-41 micro-mesoporous composites owing to the exchangeable potassium content (Al/K ratio approximate to 1) decreased in the order: 8 MMC > 10 MMC > 15 MMC > 20 MMC. The catalytic activity of the synthesized micro-mesoporous samples as a solid base was tested for the hydrogenation of xylose to sugar alcohols1 aTangale, Nilesh, P.1 aNiphadkar, Prashant, S.1 aJoshi, Praphulla, N.1 aDhepe, Paresh, L. uhttps://library.ncl.res.in/content/kltl-mcm-41-micro-mesoporous-composite-solid-base-hydrogenation-sugars02433nas a2200325 4500008004100000022001400041245014400055210006900199260000800268300000800276490000600284520132800290653001601618653002901634653002801663653002201691653001601713653003101729653002201760653002201782100001901804700002301823700002501846700001901871700001901890700002801909700002201937700002101959856012701980 2019 eng d a2073-434400aEpoxidation of karanja (Millettia pinnata) oil methyl esters in the presence of hydrogen peroxide over a simple niobium-containing catalyst0 aEpoxidation of karanja Millettia pinnata oil methyl esters in th cAPR a3440 v93 a

The synthesis, characterization and catalytic performance of a conceptually simple, novel NbOx-SiO2 catalyst are here described. The niobium(V)-silica catalyst was prepared starting from cheap and viable reactants, by alkaline deposition of NH4Nb(C2O4)(2)H2O in the presence of fructose as a stabilizer and subsequent calcination. The NbOx-SiO2 solid (0.95 Nb wt.%) was tested in the liquid-phase epoxidation with aqueous hydrogen peroxide of methyl oleate, as a model substrate. It was then tested in the epoxidation of a mixture of methyl esters (FAMEs) obtained by transesterification with methanol and purification of karanja oil, extracted from the autochthonous Indian variety of Millettia pinnata tree. The catalyst showed a promising performance in terms of methyl oleate conversion (up to 75%) and selectivity to epoxide (up to 82%). It was then tested on the FAME mixture from karanja oil, where interesting conversion values were attained (up to 70%), although with lower selectivities and yields to the mixture of desired epoxidized FAMEs. The solid withstood four catalytic cycles overall, during which a non-negligible surface reorganization of the Nb(V) sites was observed. However, this restructuring did not negatively affect the performance of the catalysts in terms of conversion or selectivity.

10aepoxidation10afatty acid methyl esters10aheterogeneous catalysis10aHydrogen peroxide10akaranja oil10amesoporous silica catalyst10aMillettia pinnata10aniobium catalysts1 aScotti, Nicola1 aRavasio, Nicoletta1 aEvangelisti, Claudio1 aPsaro, Rinaldo1 aPenso, Michele1 aNiphadkar, Prashant, S.1 aBokade, Vijay, V.1 aGuidotti, Matteo uhttps://library.ncl.res.in/content/epoxidation-karanja-millettia-pinnata-oil-methyl-esters-presence-hydrogen-peroxide-over02142nas a2200217 4500008004100000245011500041210006900156260000800225300000900233490000700242520135700249100002401606700002501630700002501655700002801680700002201708700001801730700002201748700002301770856013101793 2020 eng d00aCarbon supported size-controlled ru catalysts for selective levulinic acid hydrogenation into γ-valerolactone0 aCarbon supported sizecontrolled ru catalysts for selective levul cJAN a5-160 v133 a

Liquid phase levulinic acid hydrogenation into γ-valerolactone in 1,4-dioxane as a solvent (165°C, 20 bar) was studied over a range of Ru monometallic catalysts using mesoporous carbon material Sibunit as a support. In addition to the catalyst prepared by impregnation with RuCl3∙nH2O (0.1 M) followed by reduction in H2, size-controlled Ru(NPs)/Sibunit catalysts were synthesized by immobilization of polyvinylpyrrolidone (PVP) stabilized Ru nanoparticles (NPs) (dRu=2.4 nm). Сarbon supported colloidal Ru NPs were not studied earlier in levulinic acid hydrogenation. Activity of colloidal Ru(NPs)/Sibunit catalysts was found to be lower than that of impregnated Ru/Sibunit which could be attributed to hampering effect of PVP. However, colloidal Ru(NPs)/Sibunit purified by thermal treatment in air (180°C) followed by reduction in H2 (400°C) exhibited the same activity as impregnated one yielding 93% γ-valerolactone at 100% levulinic acid conversion. Applicability of supported PVP-assisted colloidal Ru NPs in hydrogenation of levulinic acid illustrates a potential to prepare more efficient catalysts for this reaction with a desired particle size. The catalysts were characterized by TEM, XRF, and N2 physisorption to compare their physical chemical properties.

1 aSimakova, Irina, L.1 aDemidova, Yuliya, S.1 aSimonov, Mikhail, N.1 aNiphadkar, Prashant, S.1 aBokade, Vijay, V.1 aDevi, Nandini1 aDhepe, Paresh, L.1 aMurzin, Dmitry, Yu uhttps://library.ncl.res.in/content/carbon-supported-size-controlled-ru-catalysts-selective-levulinic-acid-hydrogenation-%CE%B301325nas a2200253 4500008004100000022001400041245015900055210006900214260000800283300001400291490000700305520042200312653000600734653001900740653002500759653002100784653001900805653003400824653001300858100002200871700002800893700002200921856012800943 2020 eng d a0922-616800aSynthesis of ethyl furfuryl ether (potential biofuel) by etherification of furfuryl alcohol with ethanol over heterogenized reusable H1Cs2PW12O40 catalyst0 aSynthesis of ethyl furfuryl ether potential biofuel by etherific cAPR a2309-23250 v463 a

{Ethyl furfuryl ether (EFE) considered as potential biofuel can replace petroleum diesel up to 100%. EFE also has efficient blending properties with biodiesel to improve its cold flow properties. Herein we demonstrate efficient synthesis of EFE by etherification of renewable furfuryl alcohol (FAlc) with ethanol over heterogenized heteropoly acids. Cs-exchanged heterogenized heteropoly acid (H3-xCsxPW12O40

10aB10aetherification10aEthyl furfuryl ether10aFurfuryl alcohol10aH3-xCsxPW12O4010aHeterogenized heteropoly acid10aL ration1 aMulik, Nagesh, L.1 aNiphadkar, Prashant, S.1 aBokade, Vijay, V. uhttps://library.ncl.res.in/content/synthesis-ethyl-furfuryl-ether-potential-biofuel-etherification-furfuryl-alcohol-ethanol02159nas a2200265 4500008004100000022001400041245009700055210006900152260000800221300001200229490000700241520129500248653001801543653001801561653001301579653002301592653001801615653001101633100002401644700002401668700002601692700002801718700002201746856012501768 2021 eng d a0272-635100aActive nickel hollow nanosphere supported over SiO2 catalyst for reduction of nitro compound0 aActive nickel hollow nanosphere supported over SiO2 catalyst for cAPR a325-3350 v403 a

Nickel hollow nanospheres (Ni HNSs) was prepared by solvothermal method using mixture of ethylenediamine (EN) and ethanol (ET), sodium borohydride as reducing agent and nickel chloride hexahydrate as precursor. The particle size of the Ni HNSs were tuned by varying several parameters including precursor concentrations, reaction temperatures (130-190 degrees C), and ET to EN volume ratios. The particle size and morphology of Ni HNSs were confirmed by dynamic light scattering and transmission electron microscope, respectively. Spherical shape of Ni nanoparticles of 300 nm size having similar to 200 nm hollow space and 50 nm thickness was achieved at optimize condition of 4:6 volume ratio of ET/EN, 150 degrees C temperature, 0.1 M NaBH4 concentration, and 7 h. Ni HNSs supported over SiO2 (Ni HNSs/SiO2) with different loading of Ni HNSs (1-10 wt.%) were prepared by impregnation method. The catalyst was characterized by X-ray diffraction, and inductively coupled plasma - optical emission spectroscopy. The catalytic performance of Ni HNSs/SiO2 was carried out in the reduction of 4-Nitrophenol (4-NP) to 4 - Aminophenol (4-AP). 5 wt.% Ni HNSs/SiO2 exhibited 87% reduction of 4-NP in 25 min and stable up to 6 catalyst cycles due to higher surface area of the catalyst.

10a4-Aminophenol10a4-nitrophenol10aCatalyst10ahollow nanospheres10aNanoparticles10aNickel1 aPawar, Priyanka, S.1 aLokhande, Aboli, A.1 aNandanwar, Sachin, U.1 aNiphadkar, Prashant, S.1 aBokade, Vijay, V. uhttps://library.ncl.res.in/content/active-nickel-hollow-nanosphere-supported-over-sio2-catalyst-reduction-nitro-compound02121nas a2200277 4500008004100000022001400041245013400055210006900189260000800258300001100266490000700277520120900284653001501493653001501508653001101523653000801534653001901542653002301561653001001584100002401594700002801618700002601646700002001672700002201692856012901714 2021 eng d a1944-744200aMilder operating parameters for one-step conversion of fructose to levulinic acid over sulfonated H-beta zeolite in aqueous media0 aMilder operating parameters for onestep conversion of fructose t cJAN ae135300 v403 a

The sulfonated H-beta zeolite was successfully prepared and used for the synthesis of levulinic acid (LA) fromD-fructose. The catalyst was characterized by powder X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscope, N-2 physisorption, NH3-temperature programmed desorption and carbon-hydrogen-nitrogen-sulfur analysis. The total acid amount is increased with increase in sulfur loading, confirmed that the sulfonic acid group (SO3-H) is successfully grafted onto zeolite structure. The various parameters such as different amount of sulfur loading, reaction temperature, time, catalyst loading was studied for selective production of LA. The catalytic activity of sulfonated H-beta (S-beta) zeolite was found to be efficient for synthesis of LA from D-fructose in aqueous media. Maximum LA yield of 43.5 mol%, low HMF yield (<1%) with 98.15% fructose conversion was obtained with 3% S-beta catalyst at 160 degrees C for 7 hr. The catalyst was reusable for minimum three times by H2O2 regeneration. This study provides the new zeolitic catalyst for the efficient production of LA at shorter reaction time (7 hr) and low catalyst to substrate ratio (0.7:1).

10aconversion10aD-fructose10aH-beta10aHMF10alevulinic acid10asulfonated zeolite10ayield1 aBisen, Swapneel, K.1 aNiphadkar, Prashant, S.1 aNandanwar, Sachin, U.1 aSimakova, Irina1 aBokade, Vijay, V. uhttps://library.ncl.res.in/content/milder-operating-parameters-one-step-conversion-fructose-levulinic-acid-over-sulfonated-h02017nas a2200265 4500008004100000245013200041210006900173260000800242300001100250490000700261520119700268653001501465653001501480653000901495653000801504653001901512653002301531653001001554100002401564700002801588700002601616700002001642700002201662856006701684 2021 eng d00aMilder operating parameters for one-step conversion of fructose to levulinic acid over sulfonated H-β zeolite in aqueous media0 aMilder operating parameters for onestep conversion of fructose t cFEB ae135300 v403 aAbstract The sulfonated H-β zeolite was successfully prepared and used for the synthesis of levulinic acid (LA) from D-fructose. The catalyst was characterized by powder X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscope, N2 physisorption, NH3-temperature programmed desorption and carbon–hydrogen–nitrogen–sulfur analysis. The total acid amount is increased with increase in sulfur loading, confirmed that the sulfonic acid group (SO3-H) is successfully grafted onto zeolite structure. The various parameters such as different amount of sulfur loading, reaction temperature, time, catalyst loading was studied for selective production of LA. The catalytic activity of sulfonated H-β (S-β) zeolite was found to be efficient for synthesis of LA from D-fructose in aqueous media. Maximum LA yield of 43.5 mol%, low HMF yield (<1%) with 98.15% fructose conversion was obtained with 3% S-β catalyst at 160°C for 7 hr. The catalyst was reusable for minimum three times by H2O2 regeneration. This study provides the new zeolitic catalyst for the efficient production of LA at shorter reaction time (7 hr) and low catalyst to substrate ratio (0.7:1).10aconversion10aD-fructose10aH-β10aHMF10alevulinic acid10asulfonated zeolite10ayield1 aBisen, Swapneel, K.1 aNiphadkar, Prashant, S.1 aNandanwar, Sachin, U.1 aSimakova, Irina1 aBokade, Vijay, V. uhttps://aiche.onlinelibrary.wiley.com/doi/abs/10.1002/ep.1353002252nas a2200265 4500008004100000022001400041245009400055210006900149260000800218300001500226490000600241520142600247653001401673653001901687653002101706653001101727653000901738653001001747653001101757100002301768700002801791700002201819700002601841856011901867 2022 eng d a2365-654900aCatalytic activity of CuFe2O4 spinel oxide for liquid-phase oxidation of cinnamyl alcohol0 aCatalytic activity of CuFe2O4 spinel oxide for liquidphase oxida cFEB ae2021044410 v73 a

CuFe2O4 spinel oxide catalyst was synthesized by sol-gel and co-precipitation methods for liquid phase oxidation of Cinnamyl alcohol (CnOH) to Cinnamaldehydes (CnHO) using tert-Butyl hydroperoxide (TBHP) as oxidising agent. Spinel oxide catalyst was characterized by different techniques such as X-ray diffraction (XRD), N-2 adsorption-desorption, BET surface area, and X-ray photoelectron spectroscopy (XPS) to understand the structural, physical properties and oxidation state of the catalyst. The result shows that catalyst prepared by sol-gel method was found higher surface area and smaller crystalline size than co-precipitation method. XPS data confirm the formation of Cu2+ in the spinel which helps to improve the catalytic activity of oxidation. This reaction follows radical mechanism, and exhibited 76.7 % of CnOH conversion and 68.4 % of CnHO, and 24.8 % benzaldehyde (benzald) selectivity using TBHP at 60 degrees C. Kinetic data reveal that 41.2 kJ/mol of activation energy for the reaction. The higher activity of spinel oxide catalyst could be due synergetic effect of spinel (88 %) and oxides (12 %) formed in the catalyst, which helps to provide the oxygen during reaction. The contribution of Cu2+ is higher in sol-gel than co-precipitation, which may provide the better reactivity of catalyst. This work helps to select the effective and cost-effective catalyst for the oxidation of CnOH.

10aCatalysts10aCinnamaldehyde10aCinnamyl Alcohol10aCupper10airon10aoxide10aspinel1 aDange, Rutvija, M.1 aNiphadkar, Prashant, S.1 aBokade, Vijay, V.1 aNandanwar, Sachin, U. uhttps://library.ncl.res.in/content/catalytic-activity-cufe2o4-spinel-oxide-liquid-phase-oxidation-cinnamyl-alcohol01889nas a2200265 4500008004100000022001400041245007600055210006900131260000800200300001500208490000600223520109100229653001301320653002101333653001101354653001101365653000801376653000901384100002301393700002301416700002801439700002201467700002601489856010801515 2022 eng d a2365-654900aMethanol-to-light olefins reaction using Zn-Ag modified SSZ-13 catalyst0 aMethanoltolight olefins reaction using ZnAg modified SSZ13 catal cSEP ae2022014760 v73 a

The 2 wt.% of Zn and Ag (Zn1-x-Ag-x; x=0.2, 0.4, 0.6 %) modified SSZ-13 (SZ-13) zeolite was prepared by wet-impregnation method, and its catalytic activity was demonstrated for methanol-to-olefin (MTO). The Zn-0.6-Ag-0.4/SZ-13 catalyst exhibited high catalytic activity due to change in properties of catalyst. The Zn particles were highly dispersed inside the SZ-13; while Ag particles were dispersed on the surface of SZ-13, confirmed by HRTEM and surface area. The small % of Ag over SZ-13 promotes ethylene production via aromatization of reaction, and highly dispersed Zn on SZ-13 help to produce stable ethylene and propylene. The Zn-0.6-Ag-0.4/SZ-13 catalyst showed (similar to 10 %) higher light olefin (87 %) selectivity than parent SZ-13 as well as mono metal incorporated SZ-13. The higher catalytic activity was attributed due to effect of both metals (Zn and Ag), where Ag promotes partial aromatization on the surface, and Zn increases the Lewis acidity in the zeolite pore. This catalyst can help to improve the selectivity of light olefin using MTO reaction.

10aEthylene10aMethanol-to-Olef10aPropyl10aSilver10aSSZ10azinc1 aDange, Rutvija, M.1 aGawali, Chirag, B.1 aNiphadkar, Prashant, S.1 aBokade, Vijay, V.1 aNandanwar, Sachin, U. uhttps://library.ncl.res.in/content/methanol-light-olefins-reaction-using-zn-ag-modified-ssz-13-catalyst02028nas a2200181 4500008004100000022001400041245009800055210006900153260000800222300001400230490000700244520137000251100002401621700002801645700002201673700002601695856012501721 2023 eng d a0021-956800aEquilibrium adsorption of nitrogen, oxygen, and argon on silver-exchanged hierarchical ETS-100 aEquilibrium adsorption of nitrogen oxygen and argon on silverexc cJUL a2159-21720 v683 a

Silver-exchanged hierarchical ETS-10(Ag-H-ETS-10) was synthesizedusing Ag+ exchange with hierarchical Engelhard titanosilicate(H-ETS-10) using silver nitrate solution. The physical propertiesof the adsorbent were analyzed using X-ray diffraction (XRD), BETsurface area, nitrogen adsorption-desorption, pore volume,energy dispersive spectroscopy (EDS), and high resolution-transmissionelectron microscopy (HR-TEM). N-2 physisorption data confirmedthat a micro-mesoporous (bimodal) structure was created in the Ag-H-ETS-10.The equilibrium adsorbent data of pure gases N-2, O-2, and Ar were investigated in the temperature range from 288to 318 K up to 10 bar. The equilibrium adsorption capacity of Ag-H-ETS-10was found to be 1.12 mmol g(-1) for N-2,0.87 mmol g(-1) for O-2, and 1.09 mmol g(-1) for Ar at 298 K and & SIM;10 bar. & SIM;20% higheradsorption capacity was found for N-2 and Ar in Ag-H-ETS-10compared to Ag-ETS-10. The higher sorption capacity was attributedto the formation of a bimodal structure and & pi;-complexation interactionby the Ag cation, which allows a multilayer of N-2 and Armolecules. The Sips isotherm model was well fitted for the Ag-H-ETS-10experimental data among Langmuir, Freundlich, Toth, and Temkin models.The measured equilibrium adsorption data for Ag-H-ETS-10 can be usefulfor the O-2 purification process.

1 aShrotri, Aadesh, R.1 aNiphadkar, Prashant, S.1 aBokade, Vijay, V.1 aNandanwar, Sachin, U. uhttps://library.ncl.res.in/content/equilibrium-adsorption-nitrogen-oxygen-and-argon-silver-exchanged-hierarchical-ets-1001912nas a2200217 4500008004100000022001400041245014500055210006900200260000800269490000700277520108600284653001301370653004401383653002501427653001001452100002401462700002801486700002601514700002201540856013201562 2024 eng d a1944-744200aEffect of CTMABr/SiO2 molar ratio in synthesis of micro-mesoporous ZSM-5 composite and its application in 5-EMF (biofuel additive) formation0 aEffect of CTMABrSiO2 molar ratio in synthesis of micromesoporous cJAN0 v433 a

Synthesis of micro-mesoporous zeolite composite with optimum micro and mesoporosity is an emerging research area due to its wide applications, especially in bulk chemical or biomass transformations. It offers advantages in preserving zeolite crystallinity, creating mesoporosity and converting bulky molecules into valuable products. This work presents the process of preparing bimodal micro-mesoporous ZSM-5 using dual templates (CTMABr and TPABr). XRD, N2 adsorption-desorption, SEM, TEM, Si-29, and Al-27 NMR were used to analyze the two-dimensional micro-mesoporous ZSM-5. One-step synthesis of bimodal micro-mesoporous ZSM-5 features dual micro/mesoporosity by a marginal decrease in the crystallinity (71%). Micro-mesoporous ZSM-5 composite was found to be dependent on the optimum CTMABr/SiO2 molar ratio of 0.04 to 0.06. The micro-mesoporous ZSM-5 zeolite composite was evaluated for cascade synthesis of 5-EMF (methoxymethyl furfural- biofuel additive) from fructose and exhibited a five fold increase in 5-EMF yield to 24.2% as compared with parent ZSM-5 (4.6%).

10afructose10amethoxymethyl furfural-biofuel additive10amicro-meso composite10aZSM-51 aManal, Prajakta, N.1 aNiphadkar, Prashant, S.1 aNandanwar, Sachin, U.1 aBokade, Vijay, V. uhttps://library.ncl.res.in/content/effect-ctmabrsio2-molar-ratio-synthesis-micro-mesoporous-zsm-5-composite-and-its-application02167nas a2200265 4500008004100000022001400041245009100055210006900146260000900215300001200224490000800236520130800244653001501552653001901567653001301586653002701599653001501626100002401641700002001665700002801685700002201713700002101735700002601756856011901782 2024 eng d a1226-086X00aPerformance of Li exchange hierarchical X zeolite for CO2 adsorption and H2 separation0 aPerformance of Li exchange hierarchical X zeolite for CO2 adsorp cMAY  a505-5140 v1333 a

Li exchange hierarchical X zeolite (Li-H-X) was prepared by decationization of X zeolite by NH4Cl solution followed by Li exchange and subsequent calcination. NH4-X and Li-X were prepared to compare the results of LiH-X. XRD, FE-SEM, EDS, N2 adsorption-desorption, and micro-/mesoporous volume were performed. The higher mesoporosity was confirmed in Li-H-X due to the framework dealumination during decationization. Static and dynamic sorption capacity of sorbents was evaluated to identify the performance of sorbent. The CO2 and H2 equilibrium adsorption capacity of Li-H-X was found to be 9.6 mmol g-1 and 0.78 mmol g-1, respectively, at 298 K and 20 bar, which was 25 % (CO2) and 30 % (H2) higher than Li-X. Static experimental data were validated using the Langmuir, Freundlich, and Sips models. The CO2 & H2 dynamic sorption capacity of Li-H-X sorbent for binary gas (CO2/H2, 25/75 %) was 4.145 mmol g-1 and 0.258 mmol g-1 at 303 K and 10 bar. The higher sorption capacity of Li-H-X was obtained due to large micro-/mesoporous volume of sorbent, which may allow to access unoccupied sites at higher pressure. This result reveals that micro-/mesoporous structure of zeolite adsorbs significantly higher CO2 from binary gas stream, which can use to separate pure H2 from gas stream.

10aAdsorption10aCarbon dioxide10aHydrogen10aMicroporous-mesoporous10aSeparation1 aShrotri, Aadesh, R.1 aBirje, Amit, R.1 aNiphadkar, Prashant, S.1 aBokade, Vijay, V.1 aMali, Nilesh, A.1 aNandanwar, Sachin, U. uhttps://library.ncl.res.in/content/performance-li-exchange-hierarchical-x-zeolite-co2-adsorption-and-h2-separation02358nas a2200313 4500008004100000022001400041245014700055210006900202260000900271300001200280490000800292520132300300653001501623653001101638653001601649653001201665653000801677653001501685100002201700700002401722700002301746700002001769700002801789700002101817700002601838700002201864700002601886856013201912 2025 eng d a1226-086X00aBinderless low silica X zeolite for methane separation from binary CO2/CH4 biogas stream: A comprehensive experimental and computational study0 aBinderless low silica X zeolite for methane separation from bina cSEP  a705-7190 v1493 a

This study presents the synthesis of binderless Na-LSX (B-Na-LSX) and binderless NaK-LSX (B-NaK-LSX). XRD, SEM, EDS, and N-2 physisorption were used for characterization of samples. Computational modelling of prepared sorbent was performed for the fundamental understanding of zeolite topology and adsorption behaviour. The breakthrough experiments are used to evaluate the adsorption capacities on CO2/CH4 (40/60 vol%) binary biogas stream. The results were compared with commercial Na-LSX (C-Na-LSX). The breakthrough adsorption capacity of B-Na-LSX was 3.08 mmol g(-1) and 0.29 mmol g(-1) of CO2 and CH4, respectively, at 300 K and 1 bar. CO2 sorption capacity of B-Na-LSX was similar to 11 % and similar to 17 % higher than B-NaK-LSX (2.77 mmol g(-1)) and C-Na-LSX (2.56 mmol g(-1)), respectively. DFT study reveals that the higher adsorption of CO2 over CH4 was attributed to higher charge transfer from CO2 to zeolite framework. Dual-bed six-step Pressure Swing Adsorption (PSA) was performed on B-Na-LSX at 6 bar. similar to 232 cycles were run with above 98 % of CH4 purity and similar to 74 % of recovery. The life-cycle test of sorbent was studied. It was implied that the designed sorbent is effective to produce the high purity of CH4 and can be utilized for a longer period for CH4 production.

10aBinderless10aBiogas10aLSX zeolite10amethane10aPSA10aSeparation1 aYadav, Tushar, R.1 aShrotri, Aadesh, R.1 aKate, Pranjali, N.1 aDevasia, George1 aNiphadkar, Prashant, S.1 aMali, Nilesh, A.1 aKrishnamurty, Sailaja1 aBokade, Vijay, V.1 aNandanwar, Sachin, U. uhttps://library.ncl.res.in/content/binderless-low-silica-x-zeolite-methane-separation-binary-co2ch4-biogas-stream-comprehensive01947nas a2200253 4500008004100000022001400041245013800055210006900193260000800262300000700270490000800277520104200285653002901327653002001356653002901376653002401405100002501429700002001454700002201474700002801496700002301524700002201547856012401569 2025 eng d a0974-362600aInfluence of physicochemical properties of seed on template-free ferrierite synthesis and its application in oleic acid isomerization0 aInfluence of physicochemical properties of seed on templatefree  cJUL a620 v1373 a

We have reported an effective, seed-assisted organic structure directing agent (OSDA) free synthesis of ferrierite (FER) zeolites. In the current study, we have observed effects of physicochemical properties of two different seeds over synthesis of FER zeolites. The physicochemical properties of seeds, such as particle size and phase purity impart significantly over crystallization time and overall synthesis duration, costs of process and crystalline nature of FER zeolites. It is noteworthy that particle size of seed mainly affects the kinetics of crystallization for concerned FER zeolites. The synthesized zeolites were well characterized by XRD, FESEM, TEM, Raman spectroscopy, 27Al and 29Si MAS NMR, EDAX and BET surface area analyser to get more insights. We also evaluated, the catalytic activity of synthesized FER zeolites in oleic acid isomerization study to derive branched-chain fatty acids formation and attempted their structure and catalytic activity relationship with respect to purity of phases in seed.

10acrystallization kinetics10aFerrierite seed10aoleic acid isomerization10aOSDA-free synthesis1 aPatil, Shrinidhi, D.1 aMohanty, Ananya1 aKudalkar, Mahadev1 aNiphadkar, Prashant, S.1 aBhatte, Kushal, D.1 aBokade, Vijay, V. uhttps://library.ncl.res.in/content/influence-physicochemical-properties-seed-template-free-ferrierite-synthesis-and-its