文献类型：期刊文献

英文题名：Ordered mesoporous carbon with enhanced porosity to support organic amines: efficient nanocomposites for the selective capture of CO2

作者：Kong, Weiping[1];Liu, Jing[1]

机构：[1]Shaoxing Univ, Sch Teacher Educ, Shaoxing 312000, Zhejiang, Peoples R China

年份：2019

卷号：43

期号：15

起止页码：6040

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：SCI-EXPANDED(收录号：WOS:000465240500043)、、WOS

基金：This work was supported by the National Natural Science Foundation of China (21573150).

语种：英文

外文摘要：Organic amine impregnated porous materials have been widely used in carbon dioxide (CO2) capture, because they possess large CO2 capacities and good selectivity, and can be easily recycled. In this paper, activated ordered mesoporous carbon (AOMC) with an extremely large Brunauer, Emmett and Teller surface area (2903 m(2) g(-1)) and pore volume (3.40 cm(3) g(-1)) is reported, which was directly synthesized from the activation of ordered mesoporous carbon (OMC) using sodium amide. Because of the significantly expanded nanoporosity and highly ordered mesopores, the synthesized AOMC could accommodate much more poly(ethyleneimine) (PEI) than the pristine OMC (60.2 wt% versus 28.5 wt%). The resultant PEI@AOMC shows a much enhanced adsorption capacity (2.58 and 1.84 mmol g(-1), at 30 degrees C and 75 degrees C) for CO2 in comparison with the pristine AOMC (1.61 and 0.72 mmol g(-1), at 30 degrees C and 75 degrees C). Therefore, the PEI@AOMC composites will find important applications for the selective adsorption of CO2 in various industrial processes.