A Highly Efficient and Selective Water-Soluble Bimetallic Catalyst for Hydrogenation of Chloronitrobenzene to Chloroaniline  

作　　者：Zhou Yafen Yang Wenjuan Zhou Limei Wang Manman Ma Xiaoyan 

机构地区：[1]Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University [2]College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology

出　　处：《China Petroleum Processing & Petrochemical Technology》2015年第2期26-31,共6页中国炼油与石油化工（英文版）

基　　金：the financial supports of the Natural Science Foundation of China(No.21303139);the Open Project of Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province(No.CSPC2013-1);the Key Fund Project of Educational Department of Sichuan Province(No.14ZA0126);the Doctoral Initiating Fund of China West Normal University(No.10B010)

摘　　要：Selective hydrogenation of chloronitrobenzene(CNB) to chloroaniline(CAN) catalyzed by water-soluble Ru/Pt bimetallic catalyst in an aqueous-organic biphasic system was studied. It was found that the catalytic activity increased obviously due to the addition of platinum. Ru/Pt bimetallic catalysts exhibited a strong synergistic effect when the molar ratio of Pt was in the range of 5%—80%. Under the mild conditions including a temperature of 25 ℃, a hydrogen pressure of 1.0 MPa and a Pt molar ratio of 20%, the conversion of p-chloronitrobenzene(p-CNB) reached 99.9%, with the selectivity to p-chloroaniline(p-CAN) equating to 99.4%. The Ru/Pt catalyst also showed high activity and selectivity for the hydrogenation of other chloro- and dichloro-nitrobenzenes with different substituted positions. In addition, the catalyst can be recycled five times without significant loss of activity.Selective hydrogenation of chloronitrobenzene （CNB） to chloroaniline （CAN） catalyzed by water-soluble Ru/Pt bimetallic catalyst in an aqueous-organic biphasic system was studied. It was found that the catalytic activity increased obviously due to the addition of platinum. Ru/Pt bimetallic catalysts exhibited a strong synergistic effect when the molar ratio of Pt was in the range of 5%-80%. Under the mild conditions including a temperature of 25 ℃, a hydrogen pressure of 1.0 MPa and a Pt molar ratio of 20%, the conversion ofp-chloronitrobenzene （p-CNB） reached 99.9%, with the selectivity to p-chloroaniline （p-CAN） equating to 99.4%. The Ru/Pt catalyst also showed high activity and selectivity for the hydrogenation of other chloro- and dichloro-nitrobenzenes with different substituted positions. In addition, the catalyst can be recycled five times without significant loss of activity.

关 键 词：water-soluble bimetallic catalyst HYDROGENATION CHLORONITROBENZENE CHLOROANILINE 

分 类 号：TQ426[化学工程]