文献类型：期刊文献

英文题名：Carbon dioxide capture using polyethylenimine-loaded mesoporous carbons

作者：Wang, Jitong[1];Chen, Huichao[1];Zhou, Huanhuan[1];Liu, Xiaojun[1];Qiao, Wenming[1];Long, Donghui[1];Ling, Licheng[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2013

卷号：25

期号：1

起止页码：124

外文期刊名：JOURNAL OF ENVIRONMENTAL SCIENCES

收录：;EI(收录号：20130415928368);WOS:【SCI-EXPANDED(收录号:WOS:000314427700015)】；

基金：This work was supported by the National Natural Science Foundation of China (No. 50730003), the Program for New Century Excellent Talents in University (No. NCET-07-0285), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：carbon dioxide capture; polyethylenimine; mesoporous carbon; amine utilization ratio

摘要：A high efficiency sorbent for CO2 capture was developed by loading polyethylenimine (PEI) on mesoporous carbons which possessed well-developed mesoporous structures and large pore volume. The physicochemical properties of the sorbent were characterized by N-2 adsorption/desorption, scanning electron microscopy (SEM), thermal gravimetric analysis (TG) and Fourier transform infrared spectroscopy (FT-IR) techniques followed by testing for CO2 capture. Factors that affected the sorption capacity of the sorbent were studied. The sorbent exhibited extraordinary capture capacity with CO2 concentration ranging from 5% to 80%. The optimal PEI loading was determined to be 65 wt.% with a CO2 sorption capacity of 4.82 mmol-CO2/g-sorbent in 15% CO2/N-2 at 75 degrees C, owing to low mass-transfer resistance and a high utilization ratio of the amine compound (63%). Moisture had a promoting effect on the sorption separation of CO2. In addition, the developed sorbent could be regenerated easily at 100 degrees C, and it exhibited excellent regenerability and stability. These results indicate that this PEI-loaded mesoporous carbon sorbent should have a good potential for CO2 capture in the future.