化工进展Issue(3)：673-678,6.DOI:10.3969/j.issn.1000-6613.2014.03.026
ZrO2-Al2O3复合载体对镍基催化剂甲烷化性能的影响
Influence of zirconia-alumina composite on catalytic performance of nickel-based catalysts for methanation
杨霞 1田大勇 1孙守理 1孙琦1
作者信息
- 1. 北京低碳清洁能源研究所，北京 102209
- 折叠
摘要
Abstract
Ni/ZrO2-Al2O3 catalysts were prepared by multi-step wet impregnation method and characterized by N2 physisorption,X-ray diffraction (XRD),temperature-programmed reduction (TPR),temperature-programmed desorption (TPD) and temperature-programmed oxidation (TPO) techniques. The influence of zirconia loading on the reactivity of alumina supported nickel catalysts for CO methanation with low H2/CO ratio has been investigated. The results revealed that the addition of an intermediate content of ZrO2 improved the reducibility and dispersion of Ni species by weakening the interaction between nickel and support , which is responsible for the enhanced catalytic performances. Furthermore,it was shown that the addition of ZrO2 in Ni/Al2O3 catalysts effectively inhibited the formation of low active C species,resulting in a better coking resistance and higher catalytic stability.关键词
一氧化碳/甲烷化/氧化铝/催化剂/积炭Key words
carbon monoxide/methanation/alumina/catalyst/carbon deposition分类
化学化工引用本文复制引用
杨霞,田大勇,孙守理,孙琦..ZrO2-Al2O3复合载体对镍基催化剂甲烷化性能的影响[J].化工进展,2014,(3):673-678,6.
