稀土在聚合物负载铂催化氢化氯代硝基苯反应中的作用研究  

Effect of Rare Earth on Hydrogenation Properties of Chloronitrobenzene over Polymer-Anchored Platinum Catalysts

作　　者：张晋霞[1] 韩晓祥[1] 周仁贤[1] 郑小明[1] 

机构地区：[1]浙江大学催化研究所,浙江杭州310028

出　　处：《中国稀土学报》2002年第z2期54-56,共3页Journal of the Chinese Society of Rare Earths

摘　　要：研究了稀土元素对高分子负载Pt催化剂催化氢化氯代硝基苯反应的影响。结果表明:稀土元素的存在抑制了氯代硝基苯加氢反应活性,对产物氯代苯胺的选择性有不同程度的提高;碱NaOH存在时,PVP Pr Pt给出了90.8%的邻氯苯胺选择性,使用PVP La Pt时得到97 2%的间氯苯胺选择性,PVP Ce Pt催化体系获得了98.2%的对氯苯胺选择性。Effects of rare earth on the hydrogenation properties of chloronitrobenzene over polymeranchored platinum catalysts were investigated. The results show that the hydrogenation rate of CNB decreases obviously with the introduction of rare earth ions, and selectivity is improved to a certain extent. In the presence of NaOH, PVPPrPt, PVPLaPt and PVPCePt catalysts exhibits the highest selectivity in the hydrogenation reactions of chloronitrobenzene, and 90.8% for oCAN; 97.2% for mCAN and 98.2% for pCAN, respectively.

关 键 词：稀土 氯代硝基苯 氯代苯胺 加氢反应 

分 类 号：TG146.4+5[一般工业技术—材料科学与工程]