文献类型：期刊文献

英文题名：Effect of Precursors of Fe-Based Fischer-Tropsch Catalysts Supported on Expanded Graphite for CO2 Hydrogenation

作者：Zhao, Rui[1];Meng, Xin[1];Yin, Qiangfeng[1];Gao, Wenli[1];Dai, Wenhua[1];Jin, Daoming[1];Xu, Bowen[1];Xin, Zhong[1,2]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2021

卷号：9

期号：46

起止页码：15545

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20214711182319);WOS:【SCI-EXPANDED(收录号:WOS:000753951700020)】；

基金：This work was supported by the National Natural Science Foundation of China (grant numbers 21808064, 21808062, U1203293, 21776091).

语种：英文

外文关键词：expanded graphite; precursor; Fe-based; Fischer-Tropsch; CO2 hydrogenation

摘要：Expanded graphite as a type of hydrophobic functional carbon material was innovatively selected as support for Fe-based Fischer-Tropsch catalysts. Through catalytic activity evaluation, ferric ammonium citrate was selected as the most suitable iron precursor for expanded graphite among ferric nitrate, ferric ammonium oxalate, ferric citrate, and ferric ammonium citrate. The catalyst with ferric ammonium citrate as the precursor and expanded graphite as support achieved the best CO2 hydrogenation performance with a CO2 conversion rate of 42.4%, a C-2(=)-C-4(=) yield of 14.8%, and a CO selectivity of 8.3%. Furthermore, it was observed that the precursor that had better wettability and formed hydrogen bonds with support tended to generate smaller iron nanoparticles. In addition, nitrogen doping during catalyst calcination would cause differences in electronic properties and then influence the reducibility and carbonization of iron species.