PDF全文下载：2011050463
韩文忠， 刘漫红*
(青岛科技大学 材料科学与工程学院， 山东 青岛 266042)
摘要: 以聚乙烯吡咯烷酮(PVP)为保护剂，以低沸点醇为还原剂，制备了高分子稳定的铂胶体(PVP-Pt)。以PVP-Pt胶体为催化剂，分别对间氯硝基苯(m-CNB)和对氯硝基苯(p-CNB)进行了催化加氢反应，研究了胶体粒子的粒径对反应的影响。结果表明，PVP-Pt胶体粒子的粒径越小，催化活性越高，对间氯苯胺(m-CAN)和对氯苯胺(p-CAN)的选择性越低。
关键词: 催化氢化； Pt胶体； 间氯硝基苯； 对氯硝基苯
中图分类号:O 643.38文献标志码： A
Catalytic Hydrogenation of m-Chloronitrobenzene and
p-Chloronitrobenzene over PVP-Pt Colloids
HAN Wen-zhong, LIU Man-hong
(College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042,China)
Abstract: The poly (N-vinyl-2-pyrrolidone) (PVP)-stabilized platinum nanoparticles (PVP-Pt) colloids were prepared using PVP as protective agent and an alcohol of lower boiling point as reductive agent. The selective hydrogenation of m-chloronitrobenzene (m-CNB) and p-chloronitrobenzene (p-CNB) to obtain m-chloroaniline(m-CAN) and p-chloroaniline(p-CAN) was studied using the PVP-Pt colloids as catalysts. The effect of the particle size of PVP-Pt colloids on hydrogenation results was examined. The results showed that the activity of the catalyst increased and the selectivity to m-CAN and p-CAN decreased with the decreasing of the particle size.
Key words: catalytic hydrogenation; platinum colloid; m-chloronitrobenzene; p-chloronitrobenzene
收稿日期:2011-04-11
作者简介: 韩文忠（1980—）,男,硕士研究生.*通信联系人.
