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
收藏
页码：172 / 185
页数：14
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