CO2 adsorption on mesoporous silica with 3-D wormhole structure

被引：0
|
作者：
Cao J. [1 ]
Jiao J. [1 ]
Zhao L. [1 ]
机构：
[1] School of Science, Northwestern Polytechnical University, Xi'an
来源：
Cailiao Daobao/Materials Review | 2016年 / 30卷 / 09期
关键词：
Adsorption temperature; CO[!sub]2[!/sub] adsorption; Mesoporous type; MSU-J; Surface structure;
D O I：
10.11896/j.issn.1005-023X.2016.18.012
中图分类号：
学科分类号：
摘要：
CO2 adsorption performance of organic amine immobilized 3-D wormhole structured mesoporous silica MSU-J was studied, focusing on its surface structure, types of mesopores, amino content and adsorption conditions (adsorption temperature and adsorption pressure). The mesoporous structure and CO2 adsorption capacity of MSU-J were explored by Fourier transform infrared spectroscopy, transmission electron microscopy, N2 adsorption/desorption, thermogravimetric analysis and elemental analysis. The results indicated that the efficiency of MSU-J modified by amine impregnation was significantly higher than by grafting. The regeneration of Si-OH condensed in the process of calcination by hydrolytic treatment successfully contributed to the increase of amino loading and the CO2 adsorption capacity increased from 43.2 mg/g to 52.6 mg/g. Compared with SBA-15, CO2 adsorption capacity of amino modified MSU-J increased from 28.4 mg/g to 154.5 mg/g which was far larger than that of SBA-15(23.4-65.4 mg/g). Adsorption temperature on the MSU-J had great influence on the adsorption of CO2. The CO2 adsorption capacity increased with the decrease of adsorption temperature and achieved the peak value of 125 mg/g at room temperature. © 2016, Materials Review Magazine. All right reserved.
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页码：50 / 55
页数：5
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