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Suitability of a solid amine sorbent for CO2 capture by pressure swing adsorption / A. D. Ebner in Industrial & engineering chemistry research, Vol. 50 N° 9 (Mai 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 9 (Mai 2011) . - pp. 5634-5641 Titre : Suitability of a solid amine sorbent for CO2 capture by pressure swing adsorption Type de document : texte imprimé Auteurs : A. D. Ebner, Auteur ; M. L. Gray, Auteur ; N. G. Chisholm, Auteur Année de publication : 2011 Article en page(s) : pp. 5634-5641 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Pressure  swing  adsorption  Carbon  dioxide Résumé : This study showed that a solid amine, composed ot poly(ethylenimine) immobilized into a CARiACT G 10 silica substrate, is a feasible sorbent for applications in a pressure swing adsorption (PSA) process for postcombustion CO2 capture. This deduction materialized from an extensive study of the behavior of this material over a wide range of industrially relevant conditions using thermogravimetric analysis. The temperature ranged from 40 to 100 °C, the CO2 partial pressure ranged from 1.2 to 100 vol % with the total pressure fixed at 1 atm, the relative humidity ranged from dry conditions to 2 vol %, and the number of consecutive adsorption and desorption cycles ranged from 4 to 76. The results revealed that this solid amine sorbent was very stable under the conditions investigated. Water vapor at a low relative humidity exhibited only a minor and reversible effect on both the thermodynamics and kinetics of the CO2 uptake and release. The isothermal CO2 working capacity ranged between 0.25 and 2.8 mol/kg, increased with increasing CO2 concentration, exhibited a maximum with increasing temperature, and produced a heat of adsorption/reaction of around 50.0 kJ/mol. It was also determined that the optimal operating temperature for a PSA process was around 80 °C for CO2 partial pressures >10 kPa and 60―70 °C for CO2 partial pressures <10 kPa. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24128688 [article] Suitability of a solid amine sorbent for CO2 capture by pressure swing adsorption [texte imprimé] / A. D. Ebner, Auteur ; M. L. Gray, Auteur ; N. G. Chisholm, Auteur . - 2011 . - pp. 5634-5641. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 9 (Mai 2011) . - pp. 5634-5641 Mots-clés : Pressure  swing  adsorption  Carbon  dioxide Résumé : This study showed that a solid amine, composed ot poly(ethylenimine) immobilized into a CARiACT G 10 silica substrate, is a feasible sorbent for applications in a pressure swing adsorption (PSA) process for postcombustion CO2 capture. This deduction materialized from an extensive study of the behavior of this material over a wide range of industrially relevant conditions using thermogravimetric analysis. The temperature ranged from 40 to 100 °C, the CO2 partial pressure ranged from 1.2 to 100 vol % with the total pressure fixed at 1 atm, the relative humidity ranged from dry conditions to 2 vol %, and the number of consecutive adsorption and desorption cycles ranged from 4 to 76. The results revealed that this solid amine sorbent was very stable under the conditions investigated. Water vapor at a low relative humidity exhibited only a minor and reversible effect on both the thermodynamics and kinetics of the CO2 uptake and release. The isothermal CO2 working capacity ranged between 0.25 and 2.8 mol/kg, increased with increasing CO2 concentration, exhibited a maximum with increasing temperature, and produced a heat of adsorption/reaction of around 50.0 kJ/mol. It was also determined that the optimal operating temperature for a PSA process was around 80 °C for CO2 partial pressures >10 kPa and 60―70 °C for CO2 partial pressures <10 kPa. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24128688