文献类型：期刊文献

英文题名：Synthesis and characterization of well dispersed nickel-incorporated SBA-15 and its high activity in syngas methanation reaction

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

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, Mailbox 545,130,Meilong Rd, Shanghai 200237, Peoples R China

年份：2016

卷号：516

起止页码：127

外文期刊名：APPLIED CATALYSIS A-GENERAL

收录：;EI(收录号：20161702280069);WOS:【SCI-EXPANDED(收录号:WOS:000374717000014)】；

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：Nickel-incorporated SBA-15; pH-adjusting; Improved dispersion; Syngas methanation

摘要：Ni-incorporated SBA-15 materials were successfully synthesized by pH adjusting method using sodium hydroxide (NaOH) as the pH regulator and tetraethyl orthosilicate (TEOS) as the silica source. The results of transmission electron microscope (TEM) and H-2 pulse chemisorption showed that nickel particles of the Ni-S15 catalysts prepared by pH adjusting method were much finer and more uniform dispersion than those of Ni/S15 catalyst prepared by traditional impregnation method. The nickel dispersions of Ni-S15(pH8) and Ni/S15 were 3.6% and 2.5%, respectively. In addition, the pH value strongly affected the amount of nickel introduced in the silica framework. The catalytic performances were also investigated for synthetic natural gas (SNG) production via syngas methanation reaction. The Ni-S15(pH8) catalyst prepared by pH adjusting method achieved the best activity with 100% CO conversion and 98.6% CH4 yield at 350 degrees C, 0.3 MPa and 15000 mL/g/h. Meanwhile, the Ni-S15(pH8) catalyst possessed excellent stability and high-temperature-resistant performance due to the strong interaction between NiO and support. (C) 2016 Elsevier B.V. All rights reserved.