Reaction mechanism and kinetics of aqueous solutions of 2-amino-2-methyl-1,3-propandiol and carbon dioxide

被引：17

作者：

Bouhamra, W ^{[1
]}

Bavbek, O ^{[1
]}

Alper, E ^{[1
]}

机构：

[1] Kuwait Univ, Dept Chem Engn, Safat 13060, Kuwait

来源：

CHEMICAL ENGINEERING JOURNAL | 1999年 / 73卷 / 01期

关键词：

2-amino-2-methyl-1,3-propandiol; carbon dioxide; kinetics; hindered amine; stopped-flow;

D O I：

10.1016/S1385-8947(99)00017-0

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The mechanism and kinetics of the reaction between aqueous solutions of CO2 and a sterically hindered primary amine, 2-amino-2-methyl-1,3-propandiol (AMPD) was investigated at 278-303 K by using a stopped-flow technique. It was found that the reaction order according to power law kinetics was between 1.26 and 1.33 for amine concentration range of 0.025-1.600 kmol m(-3). This order was slightly higher than that of 2-amino-2-methyl-1-propanol (AMP), which was reported previously for similar conditions [E. Alper, Reaction mechanism and kinetics of aqueous solutions of 2-amino-2-methyl-1-propanol and carbon dioxide, Ind. Eng. Chem. Res. 29 (1990) 1725.], and was therefore considered to be further evidence that the reaction takes place according to zwitterion intermediate mechanism. The kinetic rate parameters for aqueous AMPD solutions were obtained for 273-303 K and over the concentration range of 0.025-1.600 kmol m-3 of AMPD according to this mechanism. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：67 / 70

页数：4

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