Pt/AC催化一锅法合成N-(1-乙基丙基)-3,4-二甲基苯胺的研究  

Research on one-pot synthesis of N-(1-ethylpropyl)-3,4-dimethyl aniline catalyzed by Pt/AC

作　　者：何燕秋 何代平 胡荣启 何青青 银莹 HE Yan-qiu;HE Dai-ping;HU Rong-qi;HE Qing-qing;YIN Ying(Key Lab of Green Synthesis and Applications,Ministry of Education Engineering Research Center of Biotechnology of Active Substances,College of Chemistry,Chongqing Normal University,Chongqing 401331,China)

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活性物质生物技术教育部工程研究中心

出　　处：《应用化工》2019年第6期1378-1381,共4页Applied Chemical Industry

基　　金：重庆市社会事业与民生保障科技创新项目(cstc2016shmszx20004);重庆市基础科学与前沿技术研究项目(cstc2018jcyjAX0698)

摘　　要：采用浸渍、还原法制备了不同活性炭负载铂(Pt/AC)催化剂,考察了其催化3,4-二甲基硝基苯、3-戊酮和氢气一锅法制备N-(1-乙基丙基)-3,4-二甲基苯胺性能,并用氮气物理吸附、XRD对它们的结构进行了表征。结果表明,大孔径的活性炭负载0.5%Pt对催化3,4-二甲基硝基苯、3-戊酮和氢气制备N-(1-乙基丙基)-3,4-二甲基苯胺具有优异性能。在3,4-二甲基硝基苯/催化剂质量比为100∶1、373 K、1.0 MPa氢气、反应120 min的最佳反应条件下,N-(1-乙基丙基)-3,4-二甲基苯胺选择性达99.1%。Various activated carbons supported Pt catalysts were prepared by impregnation reduction method and investigated for synthesis of N-(1-ethylpropyl)-3,4-dimethylaniline from 3,4-dimethyl nitrobenzene,3-pentanone and hydrogen. Their structures were characterized by N2 adsorption-desorption and Xray diffraction. It was found that the activated carbon with large pore size supported 0. 5% Pt exhibited better catalytic performance for synthesis of N-( 1-ethylpropyl)-3,4-dimethylaniline from 3,4-dimethyl nitrobenzene,3-pentanone and hydrogen. The yield of N-( 1-ethylpropyl)-3,4-dimethylaniline could reach99. 1% in 120 min under the optimal reaction conditions of 3,4-dimethyl nitrobenzene and catalyst at a mass ratio of 100∶ 1,373 K and 1. 0 MPa H2.

关 键 词：活性炭 铂 3 4-二甲基硝基苯 3-戊酮 N-(1-乙基丙基)-3 4-二甲基苯胺 

分 类 号：TQ032.41[化学工程]