Synthesis of Diphenyl Carbonate over the Magnetic Catalysts Pd/La_(1-x)Pb_xMnO_3 (x=0.2-0.7)  

用磁性催化剂 Pd/La_(1-x)Pb_xMnO_3(x=0.2~0.6)合成碳酸二苯酯(英文)

作　　者：鲁威 杜治平 袁华 田琦峰 吴元欣 

机构地区：[1]Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology

出　　处：《Chinese Journal of Chemical Engineering》2013年第1期8-13,共6页中国化学工程学报（英文版）

基　　金：Supported by the Key Program of National Natural Science Foundation of China(20936003);the Foundation for Innovation Research Groups of the Natural Science Foundation of Hubei Province(2008CDA009)

摘　　要：The magnetic perovskite-supported palladium catalysts Pd/Lal_xPbxMnO3 （x = 0.2-0.7） were prepared and used for the oxidative carbonylation of phenol to diphenyl carbonate. The synthesized catalysts were characterized by the X-ray diffraction （XRD）, surface area measurement BET, vibration sample magnetometer （VSM） and tem- perature-programmed reduction （TPR）. The experimental results demonstrated that the magnetic Pd/La1-xPbxMnO3 （x = 0.4-0.5） obtain relative better catalytic activity. It can be explained by higher concentration of oxygen vacan- cies, larger amount and better mobility of lattice oxygen of their support. Furthermore, these samples possess suffi- cient saturated magnetization. Thus, Pd/La1-xPbxMnO3 （x = 0.4-0.5） may be suitable for operation in the magneti- cally stabilized bed reactor.The magnetic perovskite-supported palladium catalysts Pd/La1-xPbxMnO3 (x=0.2-0.7) were prepared and used for the oxidative carbonylation of phenol to diphenyl carbonate. The synthesized catalysts were characterized by the X-ray diffraction (XRD), surface area measurement BET, vibration sample magnetometer (VSM) and tem-perature-programmed reduction (TPR). The experimental results demonstrated that the magnetic Pd/La1-xPbxMnO3 (x=0.4-0.5) obtain relative better catalytic activity. It can be explained by higher concentration of oxygen vacan-cies, larger amount and better mobility of lattice oxygen of their support. Furthermore, these samples possess suffi-cient saturated magnetization. Thus, Pd/La1-xPbxMnO3 (x=0.4-0.5) may be suitable for operation in the magneti-cally stabilized bed reactor.

关 键 词：diphenyl carbonate perovskite-type oxides magnetic catalyst magnetically stabilized bed reactor 

分 类 号：TQ245.2[化学工程—有机化工]