02111nas a2200265 4500008004100000022001400041245016200055210006900217260000800286300001100294490000800305520120000313653001301513653002101526653001101547653001601558653002301574653001101597100001901608700002601627700002401653700002001677700001801697856013001715 2020 eng d a0961-953400aMaximization of furanic compounds formation by dehydration and hydrogenation of xylose in one step over SO3-H functionalized H-beta catalyst in alcohol media0 aMaximization of furanic compounds formation by dehydration and h cAUG a1056460 v1393 a

Furanic compounds such as furfural (FUR); furfuryl alcohol (F. Alc) are important renewable platform chemicals can be used as such or further convert for preparation of other value added products such as Levulinic acid (LA), Alkyl Levulinates, 2-Methyltetrahydrofuran (MTHF), and Tetrahydrofuran (THF) etc. Sulfonated H-beta zeolite was successfully prepared and used for the synthesis of furanic compounds especially FUR and F. Alc from c-xylose in one step using isopropanol as alcohol media. Prepared catalyst was well characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), BET, NH3-Temperature programmed desorption (TPD) and carbon-hydrogen-nitrogen-sulfur analysis (CHNS). It was found the total acid amount was increased with increase in sulfur loading which confirmed the sulfonic acid group (SO3-H) was successfully grafted onto zeolite structure. 3 wt% H-beta-SO3-H catalyst with optimized reaction parameters of 150 degrees C, 7 h, 25 wt% catalyst loading was tuned to get the highest furanic compound yield of 88.5% (FUR 76.8% + F.Alc 11.7%).The reusability study confirmed that there was a marginal drop of similar to 25% after 3 recycle runs.

10afurfural10aFurfuryl alcohol10aH-beta10aisopropanol10asulfonated zeolite10aXylose1 aGupta, Anshita1 aNandanwar, Sachin, U.1 aNiphadkar, Prashant1 aSimakova, Irina1 aBokade, Vijay uhttp://library.ncl.res.in/content/maximization-furanic-compounds-formation-dehydration-and-hydrogenation-xylose-one-step-over01845nas a2200169 4500008004100000022001400041245008000055210006900135260000800204300001600212490000700228520127400235100002601509700002201535700002301557856009501580 2020 eng d a0888-588500aReview of porous adsorbents for the separation of nitrogen from natural gas0 aReview of porous adsorbents for the separation of nitrogen from  cJUL a13355-133690 v593 a

Natural gas is one of the critical fossil fuel sources in the world to fulfill current energy demand in the global market. Methane is the primary component in natural gas and its concentration is dependent on the source; a variety of impurities, such as nitrogen, carbon dioxide, oxygen, helium, hydrogen sulfide, water, and heavier hydrocarbons can be present, which reduces the overall fuel quality. Purification of natural gas is important in order to meet the U.S. pipeline and minimum heating value specifications. The separation of nitrogen from methane is challenging because of their similar molecular size (i.e., the two gases differ in kinetic diameter by only 0.16 angstrom). This Review discusses different methods for separating nitrogen from methane. Of these methods, pressure swing adsorption is one of the most effective techniques for separating nitrogen from natural gas using porous adsorbents, and encouraging results have been demonstrated in the past few decades. Many types of porous adsorbents are discussed here, including carbon molecular sieves, activated carbons, zeolites, titanosilicates, and metal-organic frameworks. Future trends and materials are discussed to put into perspective the new opportunities in this research area.

1 aNandanwar, Sachin, U.1 aCorbin, David, R.1 aShiflett, Mark, B. uhttp://library.ncl.res.in/content/review-porous-adsorbents-separation-nitrogen-natural-gas02158nas a2200265 4500008004100000022001400041245009700055210006900152260000800221300001200229490000700241520129500248653001801543653001801561653001301579653002301592653001801615653001101633100002401644700002401668700002601692700002801718700002201746856012401768 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. uhttp://library.ncl.res.in/content/active-nickel-hollow-nanosphere-supported-over-sio2-catalyst-reduction-nitro-compound02120nas a2200277 4500008004100000022001400041245013400055210006900189260000800258300001100266490000700277520120900284653001501493653001501508653001101523653000801534653001901542653002301561653001001584100002401594700002801618700002601646700002001672700002201692856012801714 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. uhttp://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.1353002027nas a2200217 4500008004100000022001400041245012300055210006900178260000800247520122800255653001701483653001701500653002801517653002301545653002401568100002601592700001801618700002001636700002201656856013101678 2021 eng d a1011-372X00aReview on selective production of acetophenone from oxidation of ethylbenzene over heterogeneous catalysts in a decade0 aReview on selective production of acetophenone from oxidation of cJAN3 a

The consumption of acetophenone (AP) is increasing worldwide because of its applications in products such as alcohol, aldehydes, resins, esters, fragrances, and pharmaceuticals. AP is manufactured via several methods like decomposition of cumene hydroperoxide, Hock process, and Friedel-Crafts acylation reaction using homogeneous catalysts with solvent and oxidant. However, it causes several environmental problems that deteriorate the production of AP with these methods. Oxidation of ethylbenzene (EB) is one of the promising methods to synthesize AP in liquid and vapor phases reaction using heterogeneous catalysts, which plays a vital role for selective production of AP. In this review, numerous heterogeneous catalysts are discussed including transition metal nanoparticles, transition metal complexes, and metal free catalysts (carbon nanotubes) used in last 10 years for oxidation of EB. Additionally, catalyst activity along with reaction parameters and its effect, mechanisms, and kinetics study are summarized in this article. The future scope of this reaction is also highlighted. Moreover, this work identifies best catalysts for bulk production of AP with high yield to satisfy global requirement.

10aacetophenone10aethylbenzene10aHeterogeneous catalysts10aOxidation reaction10areaction mechanisms1 aNandanwar, Sachin, U.1 aRathod, Simmy1 aBansal, Videsha1 aBokade, Vijay, V. uhttp://library.ncl.res.in/content/review-selective-production-acetophenone-oxidation-ethylbenzene-over-heterogeneous-catalysts02251nas a2200265 4500008004100000022001400041245009400055210006900149260000800218300001500226490000600241520142600247653001401673653001901687653002101706653001101727653000901738653001001747653001101757100002301768700002801791700002201819700002601841856011801867 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. uhttp://library.ncl.res.in/content/catalytic-activity-cufe2o4-spinel-oxide-liquid-phase-oxidation-cinnamyl-alcohol01888nas a2200265 4500008004100000022001400041245007600055210006900131260000800200300001500208490000600223520109100229653001301320653002101333653001101354653001101365653000801376653000901384100002301393700002301416700002801439700002201467700002601489856010701515 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. uhttp://library.ncl.res.in/content/methanol-light-olefins-reaction-using-zn-ag-modified-ssz-13-catalyst02027nas a2200181 4500008004100000022001400041245009800055210006900153260000800222300001400230490000700244520137000251100002401621700002801645700002201673700002601695856012401721 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. uhttp://library.ncl.res.in/content/equilibrium-adsorption-nitrogen-oxygen-and-argon-silver-exchanged-hierarchical-ets-1002013nas a2200241 4500008004100000245006700041210006700108260000800175300001100183490000700194520127900201653001501480653001901495653002001514653001701534653002001551653001301571100001901584700002401603700002001627700002601647856009801673 2024 eng d00aContinuous flow synthesis of hierarchical low silica X zeolite0 aContinuous flow synthesis of hierarchical low silica X zeolite cJUN a1090470 v393 a

Zeolites, renowned for their versatile applications in catalysis, adsorption, and ion exchange, have long been synthesized using conventional batch processes. However, the inherent limitations of these methods, such as resource-intensive conditions and inconsistent product quality, underscore the need for a sustainable and efficient approach. In this study, a continuous flow synthesis process was established for the synthesis of industrially important low silica X (LSX) zeolite using a tubular reactor. The synthesis gel was subjected to aging for 5 days at room temperature to facilitate nucleation and crystal growth combined with the fast-heating rate in a tubular reactor at 363 K & 1.1 atm., which in turn produces LSX after 40 min. The synthesized product was confirmed by the XRD, FE-SEM, EDS, XRF, TEM, and N2 adsorption-desorption; the data was compared with the LSX sample synthesized by batch process. The result implies that LSX prepared by continuous flow has a pure phase of LSX with the hierarchical structure, which provides better adsorption capacity of CO2 at 298 K up to 20 bar. Due to continuous flow synthesis, the crystallization time was reduced and faster kinetics which may be helpful for scale-up the process for LSX synthesis.

10aAdsorption10aCarbon dioxide10acontinuous flow10aLow silica X10aTubular reactor10azeolites1 aAdarsh, V., K.1 aShrotri, Aadesh, R.1 aBirje, Amit, R.1 aNandanwar, Sachin, U. uhttp://library.ncl.res.in/content/continuous-flow-synthesis-hierarchical-low-silica-x-zeolite01911nas a2200217 4500008004100000022001400041245014500055210006900200260000800269490000700277520108600284653001301370653004401383653002501427653001001452100002401462700002801486700002601514700002201540856013101562 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. uhttp://library.ncl.res.in/content/effect-ctmabrsio2-molar-ratio-synthesis-micro-mesoporous-zsm-5-composite-and-its-application02166nas a2200265 4500008004100000022001400041245009100055210006900146260000900215300001200224490000800236520130800244653001501552653001901567653001301586653002701599653001501626100002401641700002001665700002801685700002201713700002101735700002601756856011801782 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. uhttp://library.ncl.res.in/content/performance-li-exchange-hierarchical-x-zeolite-co2-adsorption-and-h2-separation02374nas a2200241 4500008004100000022001400041245011000055210006900165260000900234300001200243490000700255520154900262653001401811653002301825653002601848653001101874653002301885653003001908100002401938700002001962700002601982856012402008 2024 eng d a0360-319900aPressure swing adsorption of Li exchange hierarchical X zeolite for pure hydrogen from binary gas mixture0 aPressure swing adsorption of Li exchange hierarchical X zeolite  cJUL  a138-1470 v733 a

This study reports the separation of pure hydrogen (H2) employing pressure swing adsorption (PSA). The Li-X and Li-hierarchical X (Li-H-X) zeolite were prepared by an ion exchange process. The sorbents were evaluated through several experiments including, breakthrough, empty bed contact time (EBCT), single-bed, and two-bed PSA with different steps. The effect of pressure, purity, and recovery relationship was developed. The highpressure PSA study was performed at 4, 6, and 10 bar with varying feed flow rates to assess their efficacy in pure H2 separation using binary gas stream (H2/CO2, 75/25 vol.%). The breakthrough adsorption capacity of Li-H-X exhibited 3.4 mmol g-1 and 0.212 mmol g-1 of CO2 and H2, respectively. Li-H-X shows -8% higher CO2 sorption capacity than the Li-X sorbent at 1 bar and 300 K due to the large meso-microporous structure of the sorbent. The two-bed PSA purity and recovery were found higher than single-bed PSA. Using two-bed PSA, the Li-H-X achieved a 99.5% of purity, 92.9% of recovery, and 10.4 mL min-1 g-1 of productivity, which was -16% higher recovery and productivity than single-bed PSA at a flow rate of 1200 mL min-1 at 6 bar. With increasing the pressure and flow rate, the recovery of Li-H-X was enhanced up to 93.7% with 99.1%-99.9% H2 purity. The long-term PSA was run using Li-H-X sorbent for 7.5 h with 230 cycles with H2 purity between 98.5 and 99.5% at 6 bar. Interestingly, the adsorbent shows the scalability of PSA for efficient H2 separation for a binary mixture of H2/CO2.

10aadsorbent10aBinary gas mixture10aHydrogen purification10aLi-H-X10aMesoporous zeolite10aPressure swing adsorption1 aShrotri, Aadesh, R.1 aBirje, Amit, R.1 aNandanwar, Sachin, U. uhttp://library.ncl.res.in/content/pressure-swing-adsorption-li-exchange-hierarchical-x-zeolite-pure-hydrogen-binary-gas