- Title
- Kinetics of CO(aq), HCO with primary and secondary amines in aqueous solution
- Creator
- Zhang, Guohui; Wang, Xiaoguang; Conway, William; Maeder, Marcel; Sun, Qi; Yu, Hai
- Relation
- Huagong Xuebao/CIESC Journal Vol. 64, Issue 8, p. 2883-2890
- Relation
- http://www.hgxb.com.cn/EN/abstract/abstract14765.shtml
- Publisher
- Huaxue Gongye Chubanshe / Chemical Industry Press
- Resource Type
- journal article
- Date
- 2013
- Description
- The reaction kinetics of of CO2(aq),HCO3- with monoethanol amine(MEA),2-amino-1-propanol(2-AP),1-amino-2-propanol,iso-butyl amine(IBA),3-amino-1-propanol(3-AP),diethanol amine(DEA), morpholine(MORP), piperidine(PIPD),and 4-piperidine methanol(4-PIPDM)in aqueous solution at 25℃ was investigated by stopped-flow and 1H NMR spectrometric technologies.One plausible and universal mechanism was proposed.The rate constants for reactions of CO2(aq),HCO3- with the selected amines,the protonation constant of carbamate,and the stability constant of carbamates were obtained by the fitting results.The plot of lgk7 versus lgK9 was linear for the primary and secondary amines,respectively.The above relationships indicated that the stability constant of carbamate represented the overall contribution of its electronic,steric and solvation effects.This discovery may provide a theoretical guidance for the design of novel poly-amines in improving CO2 capture efficiency.
- Subject
- reaction kinetics; CO2; amine; bicarbonate; carbamate
- Identifier
- http://hdl.handle.net/1959.13/1298561
- Identifier
- uon:19692
- Identifier
- ISSN:0438-1157
- Language
- eng
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