Development of a pentaethylenehexamine-modified solid support adsorbent for CO_2 capture from model flue gas  

五乙烯六胺改性制备CO_2吸附剂及其对模拟烟气中CO_2捕集性能的研究(英文)

作　　者：韦力 靖宇 高正明 王运东 

机构地区：[1]School of Chemical Engineering, Beijing University of Chemical Technology [2]The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University

出　　处：《Chinese Journal of Chemical Engineering》2015年第2期366-371,共6页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(20836008,21176132);the Special Research Fund for the Doctoral Program of the Ministry of Education of China(20101012174)

摘　　要：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°C.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°C.Adsorption/desorption circle showed that the CO2working adsorption capacity of MCM-41-PEHA kept stable.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°C.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°C.Adsorption/desorption circle showed that the CO2working adsorption capacity of MCM-41-PEHA kept stable.

关 键 词：CO2adsorption Pentaethylenehexamine MCM-41 molecular sieve CO2adsorbent 

分 类 号：TQ424[化学工程]