01355nas a2200181   4500008004100000022001400041245011900055210006900174260011500243300001200358490000700370520059000377653002200967653002000989653002201009100002001031856012201051       2006                        eng d  a0019-452200aPromoter induced rapid synthesis of AlPO4-5 molecular sieve in non-aqueous media using hexamethyleneimine template0 aPromoter induced rapid synthesis of AlPO45 molecular sieve in no  a92 ACHARYA PRAFULLA CHANDRA RD ATTN:DR INDRAJIT KAR/EXEC SEC, CALCUTTA 700009, INDIAbINDIAN CHEMICAL SOCcJUL  a692-6960 v833 a<p>AlPO4-5 have been synthesized from non-aqueous media using hexamethyleneimine template in presence of sodium ions. The results show that the sodium catalyses the nucleation and crystallization process of the formation of AlPO4-5 molecular sieve. The material synthesized was characterized by XRD, SEM, carbon and nitrogen analysis, TG/DTA, FT-IR, Al-27 and P-31 MASNMR. The results show that the samples are highly crystalline. The presence of octahedral and tetrahedral sites are observed in 27 At MASNMR, P-31 MASNMR gives only a single peak for tetrahedral phosphorous atoms.</p>10aaluminophosphates10aMolecular sieve10anon-aqueous media1 aVenkatathri, N.  uhttps://library.ncl.res.in/content/promoter-induced-rapid-synthesis-alpo4-5-molecular-sieve-non-aqueous-media-using-001941nas a2200169   4500008004100000022001400041245008400055210006900139260011500208300001200323490000700335520125300342653002101595653002001616100002001636856011501656       2006                        eng d  a0019-452200aSynthesis and characterization of AlPO4-5RT molecular sieve at room temperature0 aSynthesis and characterization of AlPO45RT molecular sieve at ro  a92 ACHARYA PRAFULLA CHANDRA RD ATTN:DR INDRAJIT KAR/EXEC SEC, CALCUTTA 700009, INDIAbINDIAN CHEMICAL SOCcJUL  a697-7010 v833 a<p>Aluminophosphate molecular sieve AlPO4-5RT (AlPO4-5, prepared at room temperature) have been synthesized using hexamethyleneimine template at room temperature for the first time. Gel composition Al2O3 : P2O5 : 1.16HEM : 45H(2)O aging for 12 h at room temperature, and in 24 h, 473 K are the standard reaction conditions for synthesis of AlPO4-5. Studies on above gel composition at room temperature shows the presence of AlPO4-5 crystals. Both the aluminophosphates have been characterized by elemental analysis, XRD, SEM, FT-IR, TG/DTA, and C-13, Al-27 and P-31 MASNMR techniques. XRD analysis of AlPO4-5RT shows that the presence of low intensed pseudobochmite sample. SEM shows the morphology nanosized crystals along with platelets. TG/DTA analysis reveals the presence of maximum five stages elimination of templates. Carbon and nitrogen analysis shows that the presence of four template molecules per unitcell. C-13 MASNMR analysis shows the interaction of template with structure of the framework. Al-27 MASNMR shows the presence of small amount of octahedral co-ordination besides the rest are in tetrahedral co-ordination. P-31 MASNMR shows the presence of two environmentally different tetrahedrally co-ordinated phosphorous atoms.</p>10aAluminophosphate10aMolecular sieve1 aVenkatathri, N.  uhttps://library.ncl.res.in/content/synthesis-and-characterization-alpo4-5rt-molecular-sieve-room-temperature-001391nas a2200253   4500008004100000022001400041245011300055210006900168260007300237300001200310490000600322520053300328653002300861653001000884653001100894653002300905653002300928653001200951653000800963653001100971653000800982100002000990856012701010       2006                        eng d  a1566-736700aSynthesis and characterization of high silica content silicoaluminophosphate SAPO-35 from non-aqueous medium0 aSynthesis and characterization of high silica content silicoalum  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcOCT  a773-7770 v73 a<p>SAPO-35 with up to 15.6 Si atoms per unit cell have been synthesized, using hexamethyleneimine as template in ethylene glycol medium (molar ratio of silica in the reaction gets up to 2.5). Crystallinity and silicon incorporation was confirmed by XRD, XRF, TG/DTA, SEM, FT-IR and Al-27 and Si-29 MASNMR. These SAPO-35 materials with high Si concentration show higher activity for methanol to olefin reaction than samples prepared with up to 0.3 molar ratio of silica in the get. (c) 2005 Elsevier B.V. All rights reserved.</p>10aammonia adsorption10aFT-IR10aMASNMR10amethanol to olefin10anon-aqueous medium10aSAPO-3510aSEM10aTG/DTA10aXRD1 aVenkatathri, N.  uhttps://library.ncl.res.in/content/synthesis-and-characterization-high-silica-content-silicoaluminophosphate-sapo-35-non-001738nas a2200277   4500008004100000022001400041245009300055210006900148260007300217300001400290490000600304520087800310653000801188653001001196653001101206653000801217653001201225653001101237653001901248653001101267653000801278653000801286100002001294700001901314856012701333       2006                        eng d  a1566-736700aSynthesis and characterization of TAPO-31 molecular sieves using tripropylamine template0 aSynthesis and characterization of TAPO31 molecular sieves using   aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcDEC  a1015-10210 v73 a<p>TAPO-31 was synthesized hydrothermally using a novel template tri-n-propylamine for the first time. C and N analysis shows the butanol from titanium tetrabutoxide plays an important role in the synthesis. The incorporation of titanium into framework of phosphorous and both aluminiurn and phosphorous sites was suggested from elemental analysis. Isomorphous substitution of titanium (III) in AlPO framework was confirmed from ESR and (31)p MASNMR spectra. UV-Vis and XPS spectra revealed a partial oxidation of framework titanium (III) into titanium (IV) in the calcined TAPO-31 and thus the presence of redox centers in the products. The higher titanium content (Al/Ti = 10) TAPO-31 sample shows higher activity for phenol hydroxylation compared to lower titanium content (Al/Ti = 20) and Titanium impregnated AIPO(4)-31. (c) 2006 Elsevier B.V. All rights reserved.</p>10aESR10aFT-IR10aMASNMR10aSEM10aTAPO-3110aTG/DTA10atripropylamine10aUV-Vis10aXPS10aXRD1 aVenkatathri, N.1 aShetty, V., N.  uhttps://library.ncl.res.in/content/synthesis-and-characterization-tapo-31-molecular-sieves-using-tripropylamine-template-002023nas a2200277   4500008004100000022001400041245014800055210006900203260007300272300001000345490000800355520110600363653002301469653000801492653001001500653001201510653001601522653000801538653001101546653001101557653001201568653000801580653000801588100002001596856012901616       2006                        eng d  a0926-860X00aSynthesis, characterization and catalytic properties of vanadium aluminophosphate molecular sieves VAPO-31 and VAPSO-Amr from non-aqueous media0 aSynthesis characterization and catalytic properties of vanadium   aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcAUG  a31-390 v3103 a<p>Vanadium samples containing aluminophosphate molecular sieve (VAPO-31) and amorphous vanadium silicoaluminophosphate (VAPSO-Amr) have been synthesized using hexamethyleneimine template from non-aqueous media for the first time. XRD and SEM analyses confirm the phase purity of the synthesized samples. FT-IR analysis suggests the incorporation of V4+ in the aluminophosphate framework. ESR, UV-vis spectroscopic, and XPS techniques and cyclicvoltametric studies confirm the incorporation of vanadium and reveal its presence in tetrahedral and square pyramidal environments in the as-synthesized samples. Cyclic voltammetry reveals the presence of two redox couples in VAPO-31. This catalyst is found to be a good oxidation catalyst. Although most of the properties of VAPO-31NA and VAPSO-Amr are similar, the latter can access more vanadium and V4+ ions. Compared to aqueous media samples, it can incorporate more vanadium especially V5+, ions and has been found to be better oxidation catalyst. The physicochemical properties also change with media. (C) 2006 Elsevier B.V. All rights reserved.</p>10acyclic voltammetry10aESR10aFT-IR10aMAS NMR10anon-aqueous10aSEM10aTG/DTA10aUV-Vis10aVAPO-3110aXPS10aXRD1 aVenkatathri, N.  uhttps://library.ncl.res.in/content/synthesis-characterization-and-catalytic-properties-vanadium-aluminophosphate-molecular-001737nas a2200181   4500008004100000022001400041245008600055210006900141260011500210300001200325490000700337520102700344653002001371653002001391653001201411100002001423856011201443       2006                        eng d  a0019-452200aSynthesis of high alumina ZSM-5 molecular sieve with ethylene diamine as template0 aSynthesis of high alumina ZSM5 molecular sieve with ethylene dia  a92 ACHARYA PRAFULLA CHANDRA RD ATTN:DR INDRAJIT KAR/EXEC SEC, CALCUTTA 700009, INDIAbINDIAN CHEMICAL SOCcJUL  a686-6910 v833 a<p>Attempts were made to investigate compositional constraints in the synthesis of pentasill molecular sieves, including aluminosilicate zeolites using ethylene diamine (C2DN) template, from the gel composition 1.85Na(2)O : aAl(2)O(3) : 15.2SiO(2) : 592H(2)O : 19.7C(2)DN in the temperature 177 degrees C for ten days. When a = 0.25 the product was ZSM-5 and then a = 1 the product was ZSM-35 and in between compositions the mixture of two were obtained. Reduce the time of crystallization time to 5 days give nanocrystalline material. XRD and FT-IR spectra in framework region of ZSM-5 synthesized using ethylene diamine template and without template are having similar pattern, however the intensity varies. Scanning electron microscopic picture of the both are varies. The structural stability of the zeolite ZSM-5 synthesized using no template was also found to be lower as compared with that for the ZSM-5 synthesized using ethylene diamine template. These differences. may result from the occluded excess sodium.</p>10aethylenediamine10aMolecular sieve10azeolite1 aVenkatathri, N.  uhttps://library.ncl.res.in/content/synthesis-high-alumina-zsm-5-molecular-sieve-ethylene-diamine-template-001361nas a2200241   4500008004100000022001400041245006700055210006600122260010700188300001200295490000700307520060100314653001400915653000900929653001100938653000800949653001400957653001100971653001000982653000800992100002001000856009901020       2007                        eng d  a0970-707700aSynthesis and MASNMR characterization of VPI-5 molecular sieve0 aSynthesis and MASNMR characterization of VPI5 molecular sieve  a11/100 RAJENDRA NAGAR, SECTOR 3,, SAHIBABAD 201 005, GHAZIABAD, INDIAbASIAN JOURNAL OF CHEMISTRYcFEB  a347-3530 v193 a<p>The synthesized VPI-5 sample was characterized by XRD, SEM, FTIR, TG/DTA, Al-27, P-31 and 3Q MASNMR techniques, which shows that the sample was highly crystalline. Carbon and nitrogen analysis reveals that the sample contains no template molecules; however, TG/DTA analysis shows the presence of physisorbed template molecules. MASNMR results show the presence of two different types of aluminium and phosphorus, 3Q MASNMR shows the presence of two types of environmentally different tetrahedral aluminium, which are not observable by ordinary MASNMR along with known octahedral aluminium.</p>10a3Q-MASNMR10aFTIR10aMASNMR10aSEM10asynthesis10aTG/DTA10aVPI-510aXRD1 aVenkatathri, N.  uhttps://library.ncl.res.in/content/synthesis-and-masnmr-characterization-vpi-5-molecular-sieve02065nas a2200229   4500008004100000022001400041245014900055210006900204260010200273300001000375490000800385520110500393653002001498653002401518653005901542100002001601700003001621700001501651700001601666700002101682856013201703       2013                        eng d  a0974-362600aStructural and catalytic properties of a novel vanadium containing solid core mesoporous silica shell catalysts for gas phase oxidation reaction0 aStructural and catalytic properties of a novel vanadium containi  aC V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIAbINDIAN ACAD SCIENCEScJAN  a63-690 v1253 a<p>A novel vanadium containing solid core mesoporous silica shell catalyst was synthesized with different Si/V ratios by sol-gel method under neutral conditions. The synthesized materials were characterized by various techniques and gas phase diphenyl methane oxidation reaction. The mesoporosity combined with microporosity are formed by incorporation of octadecyltrichloro silane and triethylamine in the catalyst and it was found out from E-DAX and BET-surface area analysis. The material was found to be nanocrystalline. Vanadium is present as V4 + species in as-synthesized samples and convert to V5 + on calcination. Most of the vanadium is present in tetrahedral or square pyramidal environment. Incorporation of vanadium in silica framework was confirmed by Si-29 MAS NMR analysis. Among the various vanadium containing solid core mesoporous silica shell catalysts, the Si/V = 100 ratio exhibited maximum efficiency towards diphenyl methane to benzophenone gas phase reaction. The optimum condition required for maximum conversion and selectivity was found out from the catalytic studies.</p>10adiphenylmethane10aGas phase oxidation10avanadium containing solid core mesoporous silica shell1 aVenkatathri, N.1 aPillai, Vijayamohanan, K.1 aRajini, A.1 aRaju, Nooka1 aReddy, I., A. K.  uhttps://library.ncl.res.in/content/structural-and-catalytic-properties-novel-vanadium-containing-solid-core-mesoporous-silica-0