Ru负载石墨烯催化对氯硝基苯加氢的研究  

Research on the hydrogenation of p-choronitrobenzene over graphene support Ru catalyst

作　　者：黄文君[1] 樊光银[1] 邓红英[1] 魏群[1] 王银虎[1] 张春[1] 

机构地区：[1]西华师范大学化学化工学院化学合成与污染控制四川省重点实验室,四川南充637002

出　　处：《应用化工》2012年第12期2078-2080,2084,共4页Applied Chemical Industry

基　　金：国家自然科学基金项目(21207109);四川省教育厅自然科学重点项目(11ZA034);西华师范大学博士启动基金项目(09B006)

摘　　要：采用改进石墨氧化法制备了氧化石墨,用NaBH4还原氧化,得到石墨烯(GP),再采用浸渍法制备了Ru/GP催化剂,用于对氯硝基苯(p-CNB)加氢制对氯苯胺(p-CAN)。考察了加氢压力、溶剂体积、溶剂比例、不同溶剂等对p-CNB转化率和p-CAN选择性的影响。结果表明,当反应温度为60℃,加氢压力为4.0 MPa,反应时间为2 h时,对氯硝基苯转化率可达100.0%,对氯苯胺选择性为94.8%。The catalyst Ru-graphene was prepared by impregnation method and used for the hydrogenation of p-choronitrobenzene （p-CNB） to p-chloroaniline （p-CAN）. The catalytic performance of the catalyst Ru/GP for the selective hydrogenation of p-CNB to p-CAN was performed under a reaction temperature of 60 ℃ ,a hydrogen pressure of 4.0 MPa for 2 h. The maximum yield to p-CAN of 94.8% was observed in the ethanol/water mixtures. The results indicated that the addition of water has a great influence on the catalytic properties of the catalyst Ru/GP. Effects of hydrogenation pressure, the total volume of solvent, solvent and water ratio and solvents on hydrogenation of p-CNB conversion and p-CAN selectivity were al- so investigated.

关 键 词：对氯苯胺 对氯硝基苯加氢 RU 石墨烯 

分 类 号：TQ032.41[化学工程] TQ031.4