文献类型：期刊文献

中文题名：Ni/Al_2O_3 catalysts for syngas methanation: Effect of Mn promoter

英文题名：Ni/Al_2O_3 catalysts for syngas methanation: Effect of Mn promoter

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

机构：[1]State Key Laboratory of Chemical Engineering, Engineering Research Center of Large Scale Reactor Engineering and Technology, 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

中文期刊名：天然气化学杂志：英文版

外文期刊名：天然气化学杂志（英文版）

收录：Scopus;CSCD:【CSCD2011_2012】；

基金：supported by the National Science and Technology Supporting Plan (No. 2006BAE02B02)

语种：英文

中文关键词：甲烷化反应;锰催化剂;锰助剂;合成气;Ni/Al2O3催化剂;Ni/γ-Al2O3;固定床积分反应器;催化活性

外文关键词：manganese promotion; nickel catalysts; syngas methanation

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℃.
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℃.