二十面体钯纳米颗粒催化邻氯硝基苯的氢化  

Hydrogenation of o-Chloronitrobenzene Catalyzed by Icosahedral Pd Nanoparticles

作　　者：黄涛[1] 钱良友[1] 任玉华[1] 刘汉范[1] 

机构地区：[1]中南民族大学化学与材料科学学院催化材料科学国家民委-教育部共建重点实验室,武汉430074

出　　处：《中南民族大学学报（自然科学版）》2011年第1期1-4,共4页Journal of South-Central University for Nationalities：Natural Science Edition

基　　金：国家自然科学基金资助项目(20673146);中南民族大学自然科学基金资助项目(YZZ05002)

摘　　要：考察了γ-Al2O3负载的二十面体金属Pd纳米颗粒对邻氯硝基苯的催化氢化反应,初步探讨了该催化剂的催化性能.在氢压1 MPa、温度50℃、反应时间2 h的条件下,邻氯硝基苯转化率可达100%,邻氯苯胺的选择性可达65.4%;添加适当的金属离子可缩短氢化反应时间,转化率100%,邻氯苯胺的选择性可提高至88.1%.The catalytic properties of icosahedral Pd nanoparticles was investigated with the hydrogenation of o- chloronitrobenzene （o-CNB） catalyzed by Pd icosahedra supported on γ-Al2O3. Under the condition of 1 MPa, 50℃ and reaction time of 2 h, o-chloroaniline （o-CAN） with 65.4% selectivity at 100% conversion of o-CNB was obtained. With the addition of appropriate metal ions, the hydrogenation time was shortened and the selectivity of o-CAN increased to 88. 1% at 100% conversion without dehalogenated product. Moreover, the Pd/γ-Al2O3 catalyst was still active after reaction for 5 times.

关 键 词：钯纳米颗粒 二十面体 邻氯硝基苯 催化氢化 

分 类 号：O643.3[理学—物理化学]