文献类型：期刊文献

英文题名：Uniform Ni particles on amino-functionalized SBA-16 with excellent activity and stability for syngas methanation

作者：Bian, Zhicheng[1];Meng, Xin[1,2];Tao, Miao[1];Lv, Yuhao[1];Xin, Zhong[1,2]

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

年份：2016

卷号：417

起止页码：184

外文期刊名：JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL

收录：;EI(收录号：20161302174332);WOS:【SCI-EXPANDED(收录号:WOS:000374626200023)】；

基金：This research was financially supported by National Natural Science Funds of China (Grant No. U1203293 and 91434128), the program of Shanghai Subject Chief scientist (Grant No.10Xd1401500) and the Program of Shanghai Leading Talents (2013).

语种：英文

外文关键词：Amino-functionalized; SBA-16; Uniform particle size; CO methanation

摘要：Via modification of mesoporous material SBA-16 with silane coupling agent, a new functionalized SBA-16 catalyst immobilized Ni has been prepared. The performance of the catalyst for CO methanation then were systemically investigated in a continuous flow fixed-bed reactor. The as-synthesized catalyst was characterized with N2 absorption-desorption, X-ray diffraction, Transmission electron microscopy (TEM), FT-IR spectrum, Si-29-nuclear magnetic resonance (NMR), H-2-Temperature Programmed Reduction (TPR) and H-2 pulse chemisorption. After modification by aminopropyl-trimethoxysilane (APTMS), the internal surface silanol group of support SBA-16 was replaced by amino-groups. The replacement of hydroxyl groups by amino groups could prevent the agglomeration of metal ion in the solution. Also uniform nickel particle size was observed because the replaced organic groups on SBA-16 could form homogeneous interaction towards the metal. Comparing with the catalyst without functionalized, the catalyst Ni/SBA-16-NH2 exhibited higher activity, excellent heat-resistant performance and better stability in CO methanation. The CO conversion and CH4 selectivity could be 100% and 99.9% at the optimal temperature. Meanwhile, the catalyst showed no decrease of activity in the 100 h life test. (C) 2016 Elsevier B.V. All rights reserved.