化工进展2012，Vol.31Issue(1)：122-125,162,5.
La2O3助剂对Ni/γ-Al2O3/堇青石结构化催化剂催化加氢合成间苯二胺性能的影响
Effect of La_2O_3 on the properties of Ni/γ-Al_2O_3/cordierite structured catalysts for hydrogenation of MDN to MPDA
摘要
Abstract
The effects of adding La2O3 to Ni/γ-Al2O3-cordierite structured catalysts on their performance of the hydrogenation reaction of m-dinitrobenzene to m-phenylenediamine were investigated.The Ni catalysts modified by La2O3 were prepared by a coating method and an impregnation method.The catalysts were characterized by BET,XRD,TPR and XPS.It was found that the active components of the catalyst before and after adding La2O3 were in the form of NiAl2O4,the forms of NiAl2O4 and Ni,respectively.Adding La2O3 to the catalysts could increase the quantity of the easily reduced Ni,and further improved the catalytic activity.Although adding La decreased the surface areas of the catalysts,the pore structure was improved.The catalyst activity depended on the contents of La2O3.Ni/γ-Al2O3-cordierite structured catalysts with La2O3 of 3% exhibited better catalytic activity and selectivity.关键词
催化加氢/Ni/γ-Al2O3/La2O3/堇青石蜂窝陶瓷Key words
catalytic hydrogenation/Ni/γ-Al2O3/La2O3/cordierite honeycomb ceramics分类
化学化工引用本文复制引用
刘少文,涂文艳,包传平..La2O3助剂对Ni/γ-Al2O3/堇青石结构化催化剂催化加氢合成间苯二胺性能的影响[J].化工进展,2012,31(1):122-125,162,5.基金项目
国家自然科学基金项目 （）
