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Kinetics of CO2 Absorption in an Ethylethanolamine Based Solution
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2017-10-18 00:00:00 , DOI: 10.1021/acs.iecr.7b02932 Siming Chen 1, 2 , Guoping Hu 2 , Kathryn H. Smith 2 , Kathryn A. Mumford 2 , Yongchun Zhang 1 , Geoffrey W. Stevens 2
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2017-10-18 00:00:00 , DOI: 10.1021/acs.iecr.7b02932 Siming Chen 1, 2 , Guoping Hu 2 , Kathryn H. Smith 2 , Kathryn A. Mumford 2 , Yongchun Zhang 1 , Geoffrey W. Stevens 2
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The kinetics of CO2 absorption in ethylethanolamine based solutions were investigated using a wetted wall column (WWC) from 298 to 328 K. In the nonaqueous solutions, monoethylethanolamine (EMEA) was the reactant with a concentration range from 0.5 to 3.0 kmol m–3, and diethylethanolamine (DEEA) was the solvent. Water with volume ratio range from 0 to 150 % was added into 3.0 kmol m–3 EMEA + DEEA solution forming hydrated solutions. The overall reaction rate constants were obtained from the CO2 flux under the condition of a pseudo-first-order and fast reaction regime. The reaction rate of CO2 with nonaqueous solutions increased with either EMEA concentration or temperature, which can be represented by the termolecular mechanism. The reaction rate of CO2 with hydrated solutions increased with water volume ratio, which can be represented by both the zwitterion and the termolecular mechanisms.
中文翻译：
乙乙醇胺基溶液中CO 2吸收的动力学
使用湿壁色谱柱（WWC）在298至328 K之间研究了乙基乙醇胺基溶液中CO 2的吸收动力学。在非水溶液中，单乙基乙醇胺（EMEA）是浓度为0.5至3.0 kmol m –3的反应物。，二乙基乙醇胺（DEEA）为溶剂。将体积比范围为0至150％的水添加到3.0 kmol m –3 EMEA + DEEA溶液中，形成水合溶液。在伪一级反应和快速反应方案的条件下，从CO 2通量获得总反应速率常数。CO 2的反应速率非水溶液的浓度随EMEA浓度或温度的升高而增加，这可以通过分子机理来表示。CO 2与水合溶液的反应速率随水体积比的增加而增加，这可由两性离子和分子机理共同表示。
更新日期：2017-10-18
中文翻译：
乙乙醇胺基溶液中CO 2吸收的动力学
使用湿壁色谱柱（WWC）在298至328 K之间研究了乙基乙醇胺基溶液中CO 2的吸收动力学。在非水溶液中，单乙基乙醇胺（EMEA）是浓度为0.5至3.0 kmol m –3的反应物。，二乙基乙醇胺（DEEA）为溶剂。将体积比范围为0至150％的水添加到3.0 kmol m –3 EMEA + DEEA溶液中，形成水合溶液。在伪一级反应和快速反应方案的条件下，从CO 2通量获得总反应速率常数。CO 2的反应速率非水溶液的浓度随EMEA浓度或温度的升高而增加，这可以通过分子机理来表示。CO 2与水合溶液的反应速率随水体积比的增加而增加，这可由两性离子和分子机理共同表示。
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