Adsorption of CO2-containing gas mixtures over amine-bearing pore-expanded MCM-41 silica / Youssef Belmabkhout in Industrial & engineering chemistry research, Vol. 49 N° 1 (Janvier 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 1 (Janvier 2010) . - pp. 359–365 Titre : Adsorption of CO2-containing gas mixtures over amine-bearing pore-expanded MCM-41 silica : application for gas purification Type de document : texte imprimé Auteurs : Youssef Belmabkhout, Auteur ; Rodrigo Serna-Guerrero, Auteur ; Abdelhamid Sayari, Auteur Année de publication : 2010 Article en page(s) : pp. 359–365 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Adsorption--CO2-Containing--Gas Mixtures--Amine-Bearing--Pore-Expanded--MCM-41 Silica: Application for Gas Purification Résumé : Adsorption of CO2 on triamine-grafted pore-expanded mesoporous silica, TRI-PE-MCM-41, was investigated from very low pressure to 1 bar at four temperatures (298, 308, 318, 328 K) using gravimetric measurements. TRI-PE-MCM-41 exhibited one of the highest equilibrium capacities compared to other typical CO2 adsorbents such as zeolites, activated carbons, and metal−organic frameworks (MOFs). In contrast, under the same pressure and temperature conditions, TRI-PE-MCM-41 exhibited very small uptakes of N2, CH4, H2, and O2. Column-breakthrough measurements of CO2 in mixtures with other species showed exceedingly high selectivity of CO2 over N2, CH4, H2, and O2 even at very low CO2 concentrations, indicating that TRI-PE-MCM-41 is suitable adsorbent for gas purification applications. Moreover, water vapor was found to have a beneficial effect on CO2 adsorption capacity even at very low CO2 partial pressure, e.g. 400 ppm, without adverse effect on CO2 selectivity. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900837t [article] Adsorption of CO2-containing gas mixtures over amine-bearing pore-expanded MCM-41 silica : application for gas purification [texte imprimé] / Youssef Belmabkhout, Auteur ; Rodrigo Serna-Guerrero, Auteur ; Abdelhamid Sayari, Auteur . - 2010 . - pp. 359–365. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 1 (Janvier 2010) . - pp. 359–365 Mots-clés : Adsorption--CO2-Containing--Gas Mixtures--Amine-Bearing--Pore-Expanded--MCM-41 Silica: Application for Gas Purification Résumé : Adsorption of CO2 on triamine-grafted pore-expanded mesoporous silica, TRI-PE-MCM-41, was investigated from very low pressure to 1 bar at four temperatures (298, 308, 318, 328 K) using gravimetric measurements. TRI-PE-MCM-41 exhibited one of the highest equilibrium capacities compared to other typical CO2 adsorbents such as zeolites, activated carbons, and metal−organic frameworks (MOFs). In contrast, under the same pressure and temperature conditions, TRI-PE-MCM-41 exhibited very small uptakes of N2, CH4, H2, and O2. Column-breakthrough measurements of CO2 in mixtures with other species showed exceedingly high selectivity of CO2 over N2, CH4, H2, and O2 even at very low CO2 concentrations, indicating that TRI-PE-MCM-41 is suitable adsorbent for gas purification applications. Moreover, water vapor was found to have a beneficial effect on CO2 adsorption capacity even at very low CO2 partial pressure, e.g. 400 ppm, without adverse effect on CO2 selectivity. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900837t

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