文献类型：期刊文献

英文题名：Antisintering and High-Activity Ni Catalyst Supported on Mesoporous Silica Incorporated by Ce/Zr for CO Methanation

作者：Liu, Chenxu[1];Zhou, Jingyu[1];Ma, Hongfang[1];Qian, Weixin[1];Zhang, Haitao[1];Ying, Weiyong[1]

机构：[1]East China Univ Sci & Technol, Engn Res Ctr Large Scale Reactor Engn & Technol, Minist Educ, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2018

卷号：57

期号：43

起止页码：14406

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20184506041896);WOS:【SCI-EXPANDED(收录号:WOS:000449239500008)】；

基金：This work is financially supported by the National Science and Technology Supporting Plan (No. 2012AA050102) and the Fundamental Research Funds for the Central Universities (No. 22201817013).

语种：英文

外文关键词：Nickel - Sintering - Temperature - Catalyst supports - Cerium compounds - Hydrothermal synthesis - Silica - Zirconium compounds

摘要：Mesoporous silica (MS) and a series of completely new MS incorporated by Ce/Zr (CZ-MS) supports were synthesized by hydrothermal synthesis method. 30 wt % Ni were impregnated in the supports. N-2 adsorption-desorption, FTIR, XRD, TEM, H-2-TPR, CO-TPD and XPS were used to characterize the catalysts. And results showed Ce and Zr were successfully incorporated into the structure of MS. The CZ-MS supports provided an appropriate interaction with Ni active metal to promote the dispersibility of Ni and restrain catalysts from sintering. Compared with Ni/MS, Ni/1CZ-1MS showed better ability of antisintering and kept high catalytic activity after calcination at 700 degrees C for 3 h. The series of Ni/CZ-MS exhibited more excellent catalytic activity than Ni/MS at 200-450 degrees C. Ni/1CZ-1MS exhibited the best catalytic property at low temperature of 200 degrees C. CO conversion and CH4 selectivity reached 91.12% and 84.40%, respectively. Ni/1CZ-1MS also showed excellent catalytic stability in harsh reaction conditions.