化学工业
2015-10-31 06:42:44
中国学术期刊文摘 2015年12期
化学工业
来源出版物：Chinese Journal of Chemical Engineering，2015，23（2）： 366-371联系邮箱：Zhengming，Gaogaozm@mail.buct.edu.cn
编辑：张保清
Development of a pentaethylenehexamine-modified solid support adsorbent for CO2capture from model flue gas
Li Wei，Yu Jing，Zhengming Gao，et al.
A novel solid support adsorbent for CO2capture was developed by loading pentaethylenehexamine（PEHA）on commercially available mesoporous molecular sieve MCM-41 using wet impregnation method. MCM-41 samples before and after PEHA loading were characterized by X-ray powder diffraction，N2adsorption/desorption，thermal gravimetric analysis and scanning electron microscope to investigate the textural and thermo-physical properties. CO2adsorption performance was evaluated in a fixed bed adsorption system. Results indicated that the structure of MCM-41 was preserved after loading PEHA. Surface area and total pore volume of PEHA loaded MCM-41 decreased with the increase of loading. The working adsorption capacity of CO2could be significantly improved at 60% of PEHA loading and 75℃. The effect of the height of adsorbent bed was investigated and the best working adsorption capacity for MCM-41-PEHA-60 reached 165 mg·（g adsorbent）-1at 75℃. Adsorption/desorption circle showed that the CO2working adsorption capacity of MCM-41-PEHA kept stable.
CO2adsorption； Pentaethylenehexamine； MCM-41 molecular sieve； CO2adsorbent
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