Kinetics of the absorption of CO2 in aqueous solutions of N-methyldiethanolamine + triethylene tetramine / Jean-Marc G. Amann in Industrial & engineering chemistry research, Vol. 48 N° 8 (Avril 2009)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 48 N° 8 (Avril 2009) . - pp. 3761–3770 Titre : Kinetics of the absorption of CO2 in aqueous solutions of N-methyldiethanolamine + triethylene tetramine Type de document : texte imprimé Auteurs : Jean-Marc G. Amann, Auteur ; Chakib Bouallou, Auteur Année de publication : 2009 Article en page(s) : pp. 3761–3770 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Solvent CO2 capture N-methyldiethanolamine Triethylene tetramine Résumé : This work focuses on the development of a new solvent for CO2 capture. This new solvent is an aqueous solution with a blend of N-methyldiethanolamine (MDEA) and triethylene tetramine (TETA), an amine with four amino groups. CO2 absorption was investigated between 298 and 333 K using a Lewis cell with a constant interfacial area. Several concentrations of MDEA (17.5 and 40 wt %) and TETA (3 and 6 wt %) were assessed. The influence of the CO2 partial pressure on the absorption rate was pointed out. The addition of small amount of TETA leads to a high increase in the CO2 absorption rates. A numerical model based on the film theory was used to determine the rate coefficients between CO2 and TETA for the different solvents. The physicochemical parameters have a huge influence on the determination of the rate coefficients. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800414v [article] Kinetics of the absorption of CO2 in aqueous solutions of N-methyldiethanolamine + triethylene tetramine [texte imprimé] / Jean-Marc G. Amann, Auteur ; Chakib Bouallou, Auteur . - 2009 . - pp. 3761–3770. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 8 (Avril 2009) . - pp. 3761–3770 Mots-clés : Solvent CO2 capture N-methyldiethanolamine Triethylene tetramine Résumé : This work focuses on the development of a new solvent for CO2 capture. This new solvent is an aqueous solution with a blend of N-methyldiethanolamine (MDEA) and triethylene tetramine (TETA), an amine with four amino groups. CO2 absorption was investigated between 298 and 333 K using a Lewis cell with a constant interfacial area. Several concentrations of MDEA (17.5 and 40 wt %) and TETA (3 and 6 wt %) were assessed. The influence of the CO2 partial pressure on the absorption rate was pointed out. The addition of small amount of TETA leads to a high increase in the CO2 absorption rates. A numerical model based on the film theory was used to determine the rate coefficients between CO2 and TETA for the different solvents. The physicochemical parameters have a huge influence on the determination of the rate coefficients. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800414v

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