文献类型：期刊文献

英文题名：Ni/Al2O3 catalysts for syngas methanation: Effect of Mn promoter

作者：Zhao, Anmin[1]; Ying, Weiyong[1]; Zhang, Haitao[1]; Hongfang, Ma[1]; Fang, Dingye[1]

机构：[1] State Key Laboratory of Chemical Engineering, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China

年份：2012

卷号：21

期号：2

起止页码：170

外文期刊名：Journal of Natural Gas Chemistry

收录：EI(收录号：20121514933766)

语种：英文

外文关键词：Catalyst activity - Hydrogenation - Nickel - Crystallite size - Methanation - Methane - Nickel oxide - Synthesis gas

摘要：Ni/Al2O3 catalysts with different amounts of manganese ranging from 1 to 3 wt as promoter were prepared by co-impregnation method. The catalysts were characterized by N2 physisorption, XRD, TPR, SEM and TEM. Their catalytic activity towards syngas methanation reaction was also investigated using a fixed-bed integral reactor. It was demonstrated that the addition of manganese to Ni/Al2O3 catalysts can increase the catalyst surface area and average pore volume, but decrease NiO crystallite size, leading to higher activity and stability. The effects of reaction temperature, pressure and weight hourly space velocity (WHSV) on carbon oxides conversion and CH4 formation rate were also studied. High carbon oxides conversion, CH4 selectivity and formation rate were achieved at the reaction temperature range of 280-300°C. ? 2012 CAS/DICP.