CO2捕集用具有多级孔结构纳米孔炭的制备

唐志红|　韩　卓|　杨光智|　赵　斌|　沈淑玲|　杨俊和

CO2捕集用具有多级孔结构纳米孔炭的制备

唐志红|　韩　卓|　杨光智|　赵　斌|　沈淑玲|　杨俊和

上海理工大学材料科学与工程学院|上海 200093

基金项目: 以模板法结合化学活化法制备了具有分级结构的纳米孔炭。分别利用氮气吸附法和热重分析法考查KOH活化程度对模板法制备中孔炭的孔结构的影响和不同孔结构的多孔炭对CO2的吸附性能。结果表明，KOH活化不仅增加了大量的微孔，而且使得模板脱除得到的中孔数量降低。中孔吸附CO2对孔表面的利用率最高，而中孔和微孔的合适配比更有利用综合提高CO2的吸附量。制备的纳米孔炭具有较高的CO2吸附量和较好的循环性能和稳定性。

详细信息

中图分类号: TQ127.1+1
计量
- 文章访问数: 1648
- HTML全文浏览量: 85
- PDF下载量: 1023
- 被引次数: 0
出版历程
- 收稿日期: 2012-09-01
- 录用日期: 2013-03-05
- 修回日期: 2013-01-08
- 刊出日期: 2012-02-26

Preparation of nanoporous carbons with hierarchical pore structure for CO2 capture

TANG Zhi-hong

University of Shanghai for Science and Technology, School of Materials Science and Engineering, Shanghai 200093, China

Funds: National Natural Science Foundation of China (51102168, 51102169,21101166); Shanghai Natural Science Foundation (11ZR1424700); Shanghai Shuguang Project (09SG46); Innovation Program of Shanghai Municipal Education Commission(12YZ093); Shanghai Key Technology Research and Development Program (09520500900).

摘要

摘要: 以模板法结合化学活化法制备了具有分级结构的纳米孔炭。分别利用氮气吸附法和热重分析法考查KOH活化程度对模板法制备中孔炭的孔结构的影响和不同孔结构的多孔炭对CO₂的吸附性能。结果表明，KOH活化不仅增加了大量的微孔，而且使得模板脱除得到的中孔数量降低。中孔吸附CO₂对孔表面的利用率最高，而中孔和微孔的合适配比更有利用综合提高CO₂的吸附量。制备的纳米孔炭具有较高的CO₂吸附量和较好的循环性能和稳定性。
- 纳米孔炭 /
- CO2吸附 /
- 模板法 /
- KOH活化法
Abstract: Nanoporous carbons with a hierarchical pore structure were prepared by a combination of hard-templating of a thermosetting phenolic resin containing silica nanoparticles, pyrolysis and KOH activation. The influence of the amount of KOH on the pore structure of the templated and activated carbons was investigated by N2 adsorption and the effect of pore structure on the CO2 adsorption capacity was investigated by thermogravimetric analysis. Results indicated that KOH activation promoted the formation of micropores and small mesopores for the templated carbon. The utilization ratio of mesopores for the capture of CO2 is high compared with that of micropores. The porous carbon prepared under a mass ratio of KOH to templated carbon of 2∶1 has both developed mesopores and micropores, and has a largest adsorption capacity for CO2 among all samples investigated.
- Nanoporous carbon /
- CO2 adsorption capacity /
- Template method /
- KOH activation