文献类型：期刊文献

英文题名：Highly dispersed nickel within mesochannels of SBA-15 for CO methanation with enhanced activity and excellent thermostability

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

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

年份：2017

卷号：188

起止页码：267

外文期刊名：FUEL

收录：;EI(收录号：20164302932416);WOS:【SCI-EXPANDED(收录号:WOS:000386770400030)】；

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-based SBA-15; Surfactant-assisted impregnation; Confinement effect; CO methanation reaction

摘要：In this work, several nickel-based SBA-15 catalysts were prepared by surfactant-assisted impregnation method and applied in CO methanation reaction. The characterization results showed that Ni species were uniformly distributed in the ordered mesoporous channels of SBA-15 by adding proper surfactants. The morphologies of the unroasted catalysts and spent catalysts after 100 h stability test were also investigated. The surfactant can hinder the migration of metal ions during drying and inhibit the aggregation of NiO during calcination, which ultimately improve the nickel dispersion. Consequently, the Ni/SBA-15 catalysts prepared with surfactant-assisted impregnation method exhibited superior activity and excellent thermostability owing to the moderate interaction between nickel and support, high nickel surface area and the confinement of support. The 10% Ni/S15(3) catalyst achieved the best activity with 100% CO conversion and about 99.9% CH4 yield at 350 degrees C, 0.3 MPa and 15,000 mL/g/h. (C) 2016 Elsevier Ltd. All rights reserved.