Pt-Au/TiO_2在对氯硝基苯催化加氢反应中的催化性能  

Catalytic performance of Pt-Au/TiO_2 for p-chloronitrobenzene hydrogenation

作　　者：焦向东[1] 何代平[2] 勾英姿[1] 汪丽[1] 廖运文[1] 

机构地区：[1]西华师范大学化学化工学院,四川南充637002 [2]重庆师范大学化学学院,重庆400047

出　　处：《应用化工》2010年第10期1485-1487,1501,共4页Applied Chemical Industry

基　　金：四川省教育厅重点科研计划资助项目(08ZA019)

摘　　要：采用尿素沉积-沉淀方法制备Pt-Au/TiO2催化剂,考察了第二金属Pt的加入以及反应条件对由对氯硝基苯加氢制对氯苯胺的影响。结果表明,少量Pt的加入极大的提高了Au/TiO2催化剂的活性,当Pt-Au/TiO2催化剂中Pt含量为0.02%时,在50℃、1.0 MPa氢气条件下反应1 h,对氯硝基苯即被100%转化为对氯苯胺。Pt-Au/TiO2 catalysts were prepared by deposition-precipitation with urea,and the influence of addition of a second metal Pt and reaction conditions on hydrogenation of p-chloronitrobenzene toward p-chloroaniline was investigated.The results showed that the Au/TiO2 with minute amount metal Pt exhibited highly catalytic reactivity for hydrogenation of p-chloronitrobenzene.The p-chloronitrobenzene was reduced toward p-chloroaniline in 100% yield in 1 h at 50 ℃,1.0 MPa H2 when the Pt loading of the catalyst is 0.02%.

关 键 词：对氯苯胺 对氯硝基苯 加氢 铂金催化剂 

分 类 号：X703.1[环境科学与工程—环境工程]