邻硝基苯胺合成邻苯二胺用助剂改性Pd/C催化剂研究  

Study on the modification of Pd/C catalyst with additives for synthesis of o-phenylenediamine from o-nitroaniline

作　　者：翟康 张磊 王昭文 张涵 李岳锋 万克柔 张力 程杰 陈丹 Zhai Kang;Zhang Lei;Wang Zhaowen;Zhang Han;Li Yuefeng;Wan Kerou;Zhang Li;Cheng Jie;Chen Dan(Kaili Catalyst & New Materials Co.,Ltd.,Xi'an 710201,Shaanxi,China;Shaanxi Engineering Research Center of Noble Metal Catalyst,Xi'an 710201,Shaanxi,China)

机构地区：[1]西安凯立新材料股份有限公司,陕西西安710201 [2]陕西省贵金属催化剂工程研究中心,陕西西安710201

出　　处：《工业催化》2020年第9期51-53,共3页Industrial Catalysis

摘　　要：芳香胺作为重要的有机中间体,广泛应用于合成染料、农药、香料及医药等生产过程。研究以Co、Cu和Ag作为助剂制备得到不同助剂含量和配比的Pd/C催化剂,考察催化剂在邻硝基苯胺氢化反应中邻苯二胺收率及催化剂使用寿命。结果表明,助剂Co和Ag改性后的催化剂活性明显提高,助剂Cu的引入对催化剂性能影响较小,且催化剂A-5%Pd-0.3%Co-0.2%Ag/C和A-5%Pd-0.1%Cu-0.4%Ag/C在邻硝基苯胺氢化反应中寿命较佳。As an important organic intermediate,aromatic amines are widely used in the production process of synthetic dyes,pesticides,spices and medicines.Experiments were carried out to prepare Pd/C catalysts with different content and proportion of co-agents of Co,Cu and Ag as additives.The yield of o-phenylenediamine and the service life of the catalyst in the hydrogenation of o-nitroaniline were investigated.The results show that the activity of the catalyst modified by Co and Ag is significantly improved,the introduction of the additive Cu has little effect on the performance of the catalyst,and the catalyst A-5%Pd-0.3%Co-0.2%Ag/C,A-5%Pd-0.1%Cu-0.4%Ag/C has better life in the hydrogenation reactionof o-nitroaniline.

关 键 词：催化剂工程 邻硝基苯胺 钯炭 助剂 邻苯二胺 

分 类 号：O643.36[理学—物理化学] TQ426.94[理学—化学]