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Facile method for determination of amine speciation in CO2 capture solutions / Naser S. Matin in Industrial & engineering chemistry research, Vol. 51 N° 19 (Mai 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 19 (Mai 2012) . - pp. 6613–6618 Titre : Facile method for determination of amine speciation in CO2 capture solutions Type de document : texte imprimé Auteurs : Naser S. Matin, Auteur ; Joseph E. Remias, Auteur ; James K. Neathery, Auteur Année de publication : 2012 Article en page(s) : pp. 6613–6618 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Amine  Capture  solutions Résumé : A simple and quantitatively reliable method for determination of amine speciation is introduced. The method employs three experimental methods that should be readily accessible. The results for CO2 loaded aqueous solutions of 30 wt % monoethanolamine (MEA) are used for demonstration of the method and show promising agreement with the more complicated spectroscopic methods reported in the literature. The measurements were done at ambient temperature and atmospheric pressure, since theoretical calculations and experimental data from the open literature revealed no considerable difference in speciation at different temperatures. The procedure is based on acid and base titration of the CO2 loaded amine solution along with the determination of total CO2 loading. The quantitative results for the different species concentration in the example MEA solution is in agreement with other available spectroscopic methods, mainly NMR, particularly for the free amine, carbamate, and protonated amine concentrations. Aspen Plus was also used for further assessment of the experimental data. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie300230k [article] Facile method for determination of amine speciation in CO2 capture solutions [texte imprimé] / Naser S. Matin, Auteur ; Joseph E. Remias, Auteur ; James K. Neathery, Auteur . - 2012 . - pp. 6613–6618. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 19 (Mai 2012) . - pp. 6613–6618 Mots-clés : Amine  Capture  solutions Résumé : A simple and quantitatively reliable method for determination of amine speciation is introduced. The method employs three experimental methods that should be readily accessible. The results for CO2 loaded aqueous solutions of 30 wt % monoethanolamine (MEA) are used for demonstration of the method and show promising agreement with the more complicated spectroscopic methods reported in the literature. The measurements were done at ambient temperature and atmospheric pressure, since theoretical calculations and experimental data from the open literature revealed no considerable difference in speciation at different temperatures. The procedure is based on acid and base titration of the CO2 loaded amine solution along with the determination of total CO2 loading. The quantitative results for the different species concentration in the example MEA solution is in agreement with other available spectroscopic methods, mainly NMR, particularly for the free amine, carbamate, and protonated amine concentrations. Aspen Plus was also used for further assessment of the experimental data. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie300230k