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Sorption of CO, CH4, and N2 in alkali metal ion exchanged zeolite-X / Renjith S. Pillai in Industrial & engineering chemistry research, Vol. 49 N° 12 (Juin 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 12 (Juin 2010) . - pp. 5816–5825 Titre : Sorption of CO, CH4, and N2 in alkali metal ion exchanged zeolite-X : grand canonical Monte Carlo simulation and volumetric measurements Type de document : texte imprimé Auteurs : Renjith S. Pillai, Auteur ; Govind Sethia, Auteur ; Raksh V. Jasra, Auteur Année de publication : 2010 Article en page(s) : pp. 5816–5825 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : CO  sorption  CH4  sorptionN2Alkali  metal  ions  Monte  Carlo  simulation Résumé : Sorption of CO, CH4, and N2 in zeolite-X exchanged with different alkali metal ions was studied by volumetric measurements and Grand Canonical Monte Carlo simulation. CO and CH4 sorption is observed to show higher sorption capacity than N2 in all cation exchanged zeolite samples. The adsorption capacity of CO in alkali metal exchanged zeolites is observed to decrease on moving from LiX to CsX, whereas for the methane adsorption capacity varies in reverse order. The isosteric heat of sorption data show stronger interactions of CO and N2 molecules with alkali metal ion exchanged zeolites. The isosteric heat of CH4 show nearly same value (21−24 kJ/mol) for all alkali metal ion exchanged zeolites. Simulation of the CO and N2 sorption in alkali metal zeolite -X clearly shows that the adsorbed CO and N2 molecules are located in proximity to the extra-framework cations in the super cage. Simulated data of adsorption isotherms and heats of adsorption of CO, N2, and CH4 in alkali metal ion exchanged zeolite-X agree reasonably well with the experimental results. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901713m [article] Sorption of CO, CH4, and N2 in alkali metal ion exchanged zeolite-X : grand canonical Monte Carlo simulation and volumetric measurements [texte imprimé] / Renjith S. Pillai, Auteur ; Govind Sethia, Auteur ; Raksh V. Jasra, Auteur . - 2010 . - pp. 5816–5825. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 12 (Juin 2010) . - pp. 5816–5825 Mots-clés : CO  sorption  CH4  sorptionN2Alkali  metal  ions  Monte  Carlo  simulation Résumé : Sorption of CO, CH4, and N2 in zeolite-X exchanged with different alkali metal ions was studied by volumetric measurements and Grand Canonical Monte Carlo simulation. CO and CH4 sorption is observed to show higher sorption capacity than N2 in all cation exchanged zeolite samples. The adsorption capacity of CO in alkali metal exchanged zeolites is observed to decrease on moving from LiX to CsX, whereas for the methane adsorption capacity varies in reverse order. The isosteric heat of sorption data show stronger interactions of CO and N2 molecules with alkali metal ion exchanged zeolites. The isosteric heat of CH4 show nearly same value (21−24 kJ/mol) for all alkali metal ion exchanged zeolites. Simulation of the CO and N2 sorption in alkali metal zeolite -X clearly shows that the adsorbed CO and N2 molecules are located in proximity to the extra-framework cations in the super cage. Simulated data of adsorption isotherms and heats of adsorption of CO, N2, and CH4 in alkali metal ion exchanged zeolite-X agree reasonably well with the experimental results. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901713m

Sorption of methane, nitrogen, oxygen, and argon in ZSM-5 with different SiO2/Al2O3 ratios / Govind Sethia in Industrial & engineering chemistry research, Vol. 49 N° 5 (Mars 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 5 (Mars 2010) . - pp. 2353–2362 Titre : Sorption of methane, nitrogen, oxygen, and argon in ZSM-5 with different SiO2/Al2O3 ratios : grand canonical monte carlo simulation and volumetric measurements Type de document : texte imprimé Auteurs : Govind Sethia, Auteur ; Renjith S. Pillai, Auteur ; Ganga P. Dangi, Auteur Année de publication : 2010 Article en page(s) : pp. 2353–2362 Note générale : Industrial Chemistry Langues : Anglais (eng) Mots-clés : Methane;  Nitrogen;  Oxygen;  Volumetric  measurements Résumé : Sorption of CH4, N2, O2, and Ar in ZSM-5 with different SiO2/Al2O3 ratios was studied by volumetric measurements and grand canonical Monte Carlo simulation. Sorption capacity for all the gases studied was observed to decrease with an increase in the SiO2/Al2O3 ratio of ZSM-5. The sorption selectivity of CH4 over N2 increases, whereas sorption selectivities of N2 over O2 and Ar decrease with an increase in the SiO2/Al2O3 ratio of ZSM-5. ZSM-5 with SiO2/Al2O3 of 900 showed higher selectivity for CH4 over N2, whereas the SiO2/Al2O3 ratio of 25 showed higher N2 selectivity over O2 and Ar. The heats of adsorption for CH4 and N2 decrease and that for O2 and Ar remain unaffected with an increase in SiO2/Al2O3 ratio of ZSM-5. The values of Henry’s constant were also calculated for CH4, N2, O2, and Ar for adsorption in ZSM-5 having varied SiO2/Al2O3 ratio. The experimental results were compared with theoretically calculated data using grand canonical Monte Carlo (GCMC) simulation. Simulation studies expectedly showed the proximity of N2 molecules to the sites occupied by extraframework sodium cations. Note de contenu : Bibliogr. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900280w [article] Sorption of methane, nitrogen, oxygen, and argon in ZSM-5 with different SiO2/Al2O3 ratios : grand canonical monte carlo simulation and volumetric measurements [texte imprimé] / Govind Sethia, Auteur ; Renjith S. Pillai, Auteur ; Ganga P. Dangi, Auteur . - 2010 . - pp. 2353–2362. Industrial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 5 (Mars 2010) . - pp. 2353–2362 Mots-clés : Methane;  Nitrogen;  Oxygen;  Volumetric  measurements Résumé : Sorption of CH4, N2, O2, and Ar in ZSM-5 with different SiO2/Al2O3 ratios was studied by volumetric measurements and grand canonical Monte Carlo simulation. Sorption capacity for all the gases studied was observed to decrease with an increase in the SiO2/Al2O3 ratio of ZSM-5. The sorption selectivity of CH4 over N2 increases, whereas sorption selectivities of N2 over O2 and Ar decrease with an increase in the SiO2/Al2O3 ratio of ZSM-5. ZSM-5 with SiO2/Al2O3 of 900 showed higher selectivity for CH4 over N2, whereas the SiO2/Al2O3 ratio of 25 showed higher N2 selectivity over O2 and Ar. The heats of adsorption for CH4 and N2 decrease and that for O2 and Ar remain unaffected with an increase in SiO2/Al2O3 ratio of ZSM-5. The values of Henry’s constant were also calculated for CH4, N2, O2, and Ar for adsorption in ZSM-5 having varied SiO2/Al2O3 ratio. The experimental results were compared with theoretically calculated data using grand canonical Monte Carlo (GCMC) simulation. Simulation studies expectedly showed the proximity of N2 molecules to the sites occupied by extraframework sodium cations. Note de contenu : Bibliogr. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900280w