Kinetics of CO2 absorption into ethanolamine + water + ethanol system—mechanism, role of water, and kinetic model

Qinlan Luo,Qiang Sun,Qi Liu,Sen Liu,Min Xiao,Mengjie Chen,Yuanyuan Li,Hongxia Gao,Zhiwu Liang

Chemical Engineering Science（2022）

引用 6|浏览12

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摘要

•CO2 absorption in MEA + H2O + Ethanol is explained by zwitterion mechanism with rate-limiting of deprotonation.•Water accelerates reactions by participating in the deprotonation of MEA-zwitterion and changing the solvation environment.•An improved kinetic model based on zwitterion mechanism was proposed with an average absolute relative difference of 6.73%.

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关键词

CO2 absorption,Water-lean solution,First-order reaction constant,Reaction mechanism,The role of water,Kinetic model

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