张国辉, 王晓光, William Conway, 等. 二氧化碳、碳酸氢盐与有机伯胺和仲胺反应机理[J]. 化工学报, 2013,(8):2883-2890.
ZHANG Guohui, WANG Xiaoguang, William Conway, et al. Kinetics of CO2(aq),HCO3- with primary and secondary amines in aqueous solution[J]. CIESC Journal, 2013, (8): 2883-2890. DOI: 10.3969/j.issn.0438-1157.2013.08.026.
ZHANG Guohui, WANG Xiaoguang, William Conway, et al. Kinetics of CO2(aq),HCO3- with primary and secondary amines in aqueous solution[J]. CIESC Journal, 2013, (8): 2883-2890. DOI: 10.3969/j.issn.0438-1157.2013.08.026.DOI:
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.