Effect of Amine Structure on CO2 Capture Performance of Amine-modified SBA-15  

作　　者：TANG Qiuping 

机构地区：College of Engineering and Chemistry, Zhejiang Normal University, Jinhua 321004, P. R. China

出　　处：《Chemical Research in Chinese Universities》2017年第4期666-671,共6页高等学校化学研究（英文版）

基　　金：Supported by the Natural Science Foundation of Zhejiang Province, China（Nos.LQ13G020010, LY16B070001） and the National Natural Science Foundation of China（No.21203167）.

摘　　要：To investigate the relative CO2 capture performance of＂molecular basket＂ type solid amine sorbents with varying amine structural characteristics, two model amine isomers, triethylenetetramme（TETA） and tris（2- aminoethyl）-amine（TAEA）, were chosen alongside mesoporous silica SBA-15 as a support. The CO2 capture perfor- mance of each amine derivative was evaluated using a breakthrough method with a fixed-bed reactor. The results show that, in the absence of moisture, the SBA-TETA sorbents show better CO2 capture performance than the SBA-TAEA sorbents; on the other hand, in the presence of moisture, the SBA-TAEA sorbents show slightly improved uptake compared to the SBA-TETA sorbents. The tertiary amine groups, such as those found on TAEA, are known to be un-reactive with CO2 in the absence of moisture, but is activated in the presence of moisture may account for these findings.To investigate the relative CO2 capture performance of＂molecular basket＂ type solid amine sorbents with varying amine structural characteristics, two model amine isomers, triethylenetetramme（TETA） and tris（2- aminoethyl）-amine（TAEA）, were chosen alongside mesoporous silica SBA-15 as a support. The CO2 capture perfor- mance of each amine derivative was evaluated using a breakthrough method with a fixed-bed reactor. The results show that, in the absence of moisture, the SBA-TETA sorbents show better CO2 capture performance than the SBA-TAEA sorbents; on the other hand, in the presence of moisture, the SBA-TAEA sorbents show slightly improved uptake compared to the SBA-TETA sorbents. The tertiary amine groups, such as those found on TAEA, are known to be un-reactive with CO2 in the absence of moisture, but is activated in the presence of moisture may account for these findings.

关 键 词：C02 capture Mesoporous silica MOISTURE 

分 类 号：O643.36[理学—物理化学] TN929.533[理学—化学]