文献类型：期刊文献

英文题名：Polyol-pretreated SBA-16 supported Ni-Fe bimetallic catalyst applied in CO methanation at low temperature

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

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, State Key Lab Chem Engn, 130th Rd Meilong, Shanghai 200237, Peoples R China

年份：2021

卷号：512

外文期刊名：MOLECULAR CATALYSIS

收录：;EI(收录号：20213110697156);WOS:【SCI-EXPANDED(收录号:WOS:000685507700002)】；

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

语种：英文

外文关键词：Polyol; Pretreatment; Bimetallic catalyst; CO methanation; Low temperature

摘要：Polyols were used to pretreat the mesoporous silica molecular sieve SBA-16 and thus supported bimetallic Ni-Fe catalyst was prepared in order to address the low activity of CO methanation at lower temperature. The characterization of the pretreated support and catalysts indicated that the residual polyols release heat during combustion, which could provide energy for the decomposition of metal precursors, lowering the decomposition temperature and reducing the metal particle size. More importantly, the pretreatment of support with polyols could increase the isolated silicon hydroxyl, and strengthen the metal-support interaction, thus obtaining smaller metal particles. The smaller metal particles promoted the dissociation of reactant gas, as a result, Ni-Fe bimetallic catalyst with polyol-pretreated support could lower the minimum temperature for CO complete conversion from 290 degrees C to 230 degrees C while keeping CH4 selectivity above 90%. Catalysts with polyol-pretreated support provide a new possibility for low-temperature CO methanation technology.