张永春

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:男

毕业院校:大连工学院

学位:学士

所在单位:化工学院

学科:工业催化. 化学工艺

办公地点:大连理工大学西校区化工实验楼B221

联系方式:凌工路2号大连理工大学西校区化工实验楼B221,116023 tel:041184986322,email:zalidy5518@vip.sina.com

电子邮箱:zhangyc@dlut.edu.cn

扫描关注

论文成果

当前位置: 张永春教授 >> 科学研究 >> 论文成果

A C-13 NMR study of carbon dioxide absorption and desorption in pure and blended 2-(2-aminoethylamine)ethanol (AEEA) and 2-amino-2-methyl-1-propanol (AMP) solutions

点击次数:

论文类型:期刊论文

发表时间:2014-09-01

发表刊物:INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL

收录刊物:SCIE、EI、Scopus

卷号:28

页面范围:88-95

ISSN号:1750-5836

关键字:CO2 capture; C-13 NMR; 2-(2-Aminoethylamine)ethanol; 2-Amino-2-methyl-1-propanol

摘要:Quantitative C-13 nuclear magnetic resonance (NMR) spectroscopy was used to study carbon dioxide (CO2) absorption and desorption, at 313 and 393K, respectively, from 30 wt% aqueous 2-(2-aminoethylamine)ethanol (AEEA), 30 wt% 2-amino-2-methyl-1-propanol (AMP) and 20 wt% AEEA + 10 wt% AMP solutions. The C-13 NMR results indicate that the main AEEA species are free amine, protonated amine, primary carbamate and secondary carbamate, and the main AMP species are free amine and protonated amine. There is no evident indication that dicarbamate species of AEEA and carbamate of AMP are formed. When AEEA absorbs CO2, the formation of AEEA carbamate on primary amine is comparatively faster than that on secondary amine. During the CO2 desorption process, the AEEA carbamate on secondary amine is produced by an endothermic reaction, which reduces the overall efficiency of desorption. Six cycles of absorption-desorption tests are performed to measure the feasibility of regenerated amine solutions for reuse and the absorption amount of them remains essentially constant during the second to the sixth absorption-desorption experiments. Compared with pure AEEA solution, the recyclability of blended amines, AEEA + AMP, improves while the mol CO2/mol amine (CO2 loading) of the blended amines decreases. (C) 2014 Elsevier Ltd. All rights reserved.