文献类型：期刊文献

英文题名：Solubility and diffusivity of CO2 in n-butanol+N235 system and absorption mechanism of CO2 in a coupled reaction-extraction process

作者：Chen, Guilan[1];Song, Xingfu[1];Sun, Shuying[1];Xu, Yanxia[1];Yu, Jianguo[1]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake R, Shanghai 200237, Peoples R China

年份：2016

卷号：10

期号：4

起止页码：480

外文期刊名：FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING

收录：;EI(收录号：20165203189180);WOS:【SCI-EXPANDED(收录号:WOS:000391822300004)】；

语种：英文

外文关键词：carbon dioxide; N235; solubility; diffusivity; coupled process

摘要：The absorption of CO2 in insoluble organic amine is crucial for understanding the mechanism of coupled reaction-extraction-crystallization process between aqueous chloride and CO2. In this study, the solubility and diffusivity of CO2 in n-butanol + N235 system were measured and reported. The absorption of CO2 in the system is a physical absorption behavior and the solubility of CO2 decreases with the increase of the mass fraction of N235. The diffusivity of CO2 increases firstly and then decreases with the increase in the mass fraction of N235. Moreover, the absorption mechanism of CO2 in the coupled reaction-extraction-crystallization process was investigated and identified by experiments. The results indicated that in the coupled reaction-extraction-crystallization process, CO2 is absorbed by the aqueous phase rather than by the organic phase and further transferred into the aqueous phase.