焙烧条件对Pt-Fe/AC催化对氯硝基苯加氢性能的影响  

Effect of calcination conditions on catalytic performance of Pt-Fe/AC for p-chloronitrobenzene hydrogenation

作　　者：陈虎[1] 何代平[1] 何青青[1] 邓燕[1] 何燕秋 

机构地区：[1]重庆师范大学化学学院绿色合成与应用重庆市重点实验室,重庆401331

出　　处：《应用化工》2017年第7期1309-1312,共4页Applied Chemical Industry

基　　金：重庆市社会民生科技创新项目(cstc2016shmszx20004);重庆国际科技合作基地建设项目(cstc2014gjhz20002)

摘　　要：考察了焙烧条件对活性炭负载Pt-Fe催化对氯硝基苯选择加氢制对氯苯胺反应性能的影响,同时用X射线衍射、透射电子显微镜和X射线光电子能谱表征了该催化剂的结构。结果表明,焙烧气氛和焙烧温度对催化剂性能影响显著,在空气气氛中200℃下焙烧的Pt-Fe/AC具有较高的催化对氯硝基苯选择加氢制对氯苯胺反应性能。在对氯硝基苯/催化剂质量比为50∶1、30℃、1.0 MPa氢气条件下反应90 min,对氯硝基苯即被100%转化为对氯苯胺。Influence of calcination conditions on catalytic performance of the activated carbon supported Pt-Fe for selective hydrogenation of p-chloronitrobenzene（ p-CNB） to p-chloroaniline（ p-CAN） was investigated. The structure of the catalyst was characterized by means of X-ray diffraction（ XRD）,transmission electron microscopy（ TEM） and X-ray photoelectron spectroscopy（ XPS）. The results showed that calcination atmosphere and temperature had significant effect on catalytic performance of the catalyst. The Pt-Fe/AC catalyst calcined at 200 ℃ in air atmosphere exhibited better catalytic performance than the other catalysts. The p-chloronitrobenzene was completely reduced to p-chloroaniline in 90 min under the reaction conditions of p-CNB and catalyst in a mass ratio of 50∶ 1,30 ℃ and 1. 0 MPa H2.

关 键 词：铂 铁 催化加氢 对氯硝基苯 对氯苯胺 

分 类 号：TQ032.41[化学工程]