Absorption of CO2 into novel aqueous bis(3-aminopropyl)amine and enhancement of CO2 absorption into its blends with N-methyldiethanolamine

被引：19

作者：

Das, Bisweswar ^{[1
]}

Deogam, Binay ^{[1
]}

Mandal, Bishnupada ^{[1
]}

机构：

[1] Indian Inst Technol Guwahati, Dept Chem Engn, Gauhati 781039, Assam, India

来源：

INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL | 2017年 / 60卷

关键词：

CO2; capture; Kinetic constant; NMR analysis; Reaction mechanism; Bis(3-aminopropyl)amine activator; N-Methyldiethanolamine; CARBON-DIOXIDE; 2-AMINO-2-METHYL-1-PROPANOL AMP; MONOETHANOLAMINE MEA; KINETICS; CAPTURE; AMINE;

D O I：

10.1016/j.ijggc.2017.03.018

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A study towards the kinetics of carbon dioxide (CO2) absorption into a novel aqueous solution of bis(3-aminopropyle)amine (APA) was carried out at 303, 308, 313 and 3231( over a concentration range of 0.1-0.5 kmol m(-3) and different CO2 partial pressure. The reaction mechanism of CO2 with primary and secondary amines (zwitterionic mechanism) is described and based on this, experimentally obtained kinetic data are interpreted. A qualitative nuclear magnetic resonance [NMR (1D and 2D)] spectroscopy method has been applied to develop the reaction scheme for novel aqueous APA with CO2, The kinetic rate parameters were investigated according to the pseudo-first-order condition. The values of second-order rate constant, k(2-APA) and reaction rate with CO2 reported in this study were higher than piperazine (PZ), 2-(1-piperazinl)-ethylamine (PZEA), etc. Furthermore, enhancement factor increases significantly in comparison to aqueous MDEA solutions when the APA concentrations in the blends with MDEA varied from 0 to 0.5 kmol m(-3). (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：172 / 185

页数：14

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