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New amines for CO2 capture. III. effect of alkyl chain length between amine functions on polyamines degradation / Helene Lepaumier in Industrial & engineering chemistry research, Vol. 49 N° 10 (Mai 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 10 (Mai 2010) . - pp. 4553-4560 Titre : New amines for CO2 capture. III. effect of alkyl chain length between amine functions on polyamines degradation Type de document : texte imprimé Auteurs : Helene Lepaumier, Auteur ; Sandrine Martin, Auteur Année de publication : 2010 Article en page(s) : pp. 4553-4560 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Carbon  dioxide Résumé : This study examines degradation of five tertiary polyamines (di- and triamines) in the presence of CO2 or O2. They were chosen to identify the impact of alkyl chain length between amine functions. Degradation of aqueous amine solutions was evaluated at 140 °C under CO2 or air pressure (2 MPa) in stainless steel batch reactors for 15 days. At the end of the run, most degradation products were identified by gas chromatography (GC)/mass spectrometry; amounts of remaining amine and its degradation products were determined with a quantitative GC method. The main degradation mechanisms are proposed, and some structure−properties relationships are established. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=22797443 [article] New amines for CO2 capture. III. effect of alkyl chain length between amine functions on polyamines degradation [texte imprimé] / Helene Lepaumier, Auteur ; Sandrine Martin, Auteur . - 2010 . - pp. 4553-4560. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 10 (Mai 2010) . - pp. 4553-4560 Mots-clés : Carbon  dioxide Résumé : This study examines degradation of five tertiary polyamines (di- and triamines) in the presence of CO2 or O2. They were chosen to identify the impact of alkyl chain length between amine functions. Degradation of aqueous amine solutions was evaluated at 140 °C under CO2 or air pressure (2 MPa) in stainless steel batch reactors for 15 days. At the end of the run, most degradation products were identified by gas chromatography (GC)/mass spectrometry; amounts of remaining amine and its degradation products were determined with a quantitative GC method. The main degradation mechanisms are proposed, and some structure−properties relationships are established. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=22797443

New amines for CO2 capture. IV. degradation, corrosion, and quantitative structure property relationship model / Sandrine Martin in Industrial & engineering chemistry research, Vol. 51 N° 18 (Mai 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6283–6289 Titre : New amines for CO2 capture. IV. degradation, corrosion, and quantitative structure property relationship model Type de document : texte imprimé Auteurs : Sandrine Martin, Auteur ; Helene Lepaumier, Auteur ; Dominique Picq, Auteur Année de publication : 2012 Article en page(s) : pp. 6283–6289 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Amines  Corrosion Résumé : Degradation of 22 compounds was evaluated in stainless steel batch reactors at 140 °C for 14 days under a pressure of 0.5 MPa (mixture of 75% CO2, 20% N2, and 5% O2). For each run, two corrosion coupons, one carbon steel (XC38) and one stainless steel (304Ti), were immersed in aqueous solutions of amines to determine corrosion due to degraded solutions. Two additional coupons were put in the vapor phase above solutions. At the end of the run, corrosion rates were evaluated through weight-loss measurements. The amounts of remaining starting material were determined with a quantitative gas chromatography method. Corrosion and degradation data were compared with those of a benchmark molecule (MEA, monoethanolamine), tested under the same conditions. Results indicate that some molecules are less corrosive and have a better chemical stability than MEA. In addition, a quantitative structure property relationship (QSPR) model was built that can be applied to predict compound degradation. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2029877 [article] New amines for CO2 capture. IV. degradation, corrosion, and quantitative structure property relationship model [texte imprimé] / Sandrine Martin, Auteur ; Helene Lepaumier, Auteur ; Dominique Picq, Auteur . - 2012 . - pp. 6283–6289. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6283–6289 Mots-clés : Amines  Corrosion Résumé : Degradation of 22 compounds was evaluated in stainless steel batch reactors at 140 °C for 14 days under a pressure of 0.5 MPa (mixture of 75% CO2, 20% N2, and 5% O2). For each run, two corrosion coupons, one carbon steel (XC38) and one stainless steel (304Ti), were immersed in aqueous solutions of amines to determine corrosion due to degraded solutions. Two additional coupons were put in the vapor phase above solutions. At the end of the run, corrosion rates were evaluated through weight-loss measurements. The amounts of remaining starting material were determined with a quantitative gas chromatography method. Corrosion and degradation data were compared with those of a benchmark molecule (MEA, monoethanolamine), tested under the same conditions. Results indicate that some molecules are less corrosive and have a better chemical stability than MEA. In addition, a quantitative structure property relationship (QSPR) model was built that can be applied to predict compound degradation. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2029877