Synthesis of Diphenyl Carbonate over the Magnetic Catalysts Pd/La1-xPbxMnO3 (x=0.2-0.7)

doi:10.1016/S1004-9541(13)60435-8

Chinese Journal of Chemical Engineering

• 催化、动力学与反应工程 • 上一篇下一篇

Synthesis of Diphenyl Carbonate over the Magnetic Catalysts Pd/La_1-xPb_xMnO₃ (x=0.2-0.7)

鲁威, 杜治平, 袁华, 田琦峰, 吴元欣

Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, China

收稿日期:2011-07-08 修回日期:2011-11-08 出版日期:2013-02-28 发布日期:2013-02-04
通讯作者: WU Yuanxin
基金资助:
Supported by the Key Program of National Natural Science Foundation of China (20936003) and the Foundation for Innovation Research Groups of the Natural Science Foundation of Hubei Province (2008CDA009).

Synthesis of Diphenyl Carbonate over the Magnetic Catalysts Pd/La_1-xPb_xMnO₃ (x=0.2-0.7)

LU Wei, DU Zhiping, YUAN Hua, TIAN Qifeng, WU Yuanxin

Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, China

Received:2011-07-08 Revised:2011-11-08 Online:2013-02-28 Published:2013-02-04
Supported by:
Supported by the Key Program of National Natural Science Foundation of China (20936003) and the Foundation for Innovation Research Groups of the Natural Science Foundation of Hubei Province (2008CDA009).

摘要/Abstract

摘要： The magnetic perovskite-supported palladium catalysts Pd/La_1-xPb_xMnO₃ (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 temperature-programmed reduction (TPR). The experimental results demonstrated that the magnetic Pd/La_1-xPb_xMnO₃ (x=0.4-0.5) obtain relative better catalytic activity. It can be explained by higher concentration of oxygen vacancies, larger amount and better mobility of lattice oxygen of their support. Furthermore, these samples possess sufficient saturated magnetization. Thus, Pd/La_1-xPb_xMnO₃ (x=0.4-0.5) may be suitable for operation in the magnetically stabilized bed reactor.

关键词: diphenyl carbonate, perovskite-type oxides, magnetic catalyst, magnetically stabilized bed reactor

Abstract: The magnetic perovskite-supported palladium catalysts Pd/La_1-xPb_xMnO₃ (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 temperature-programmed reduction (TPR). The experimental results demonstrated that the magnetic Pd/La_1-xPb_xMnO₃ (x=0.4-0.5) obtain relative better catalytic activity. It can be explained by higher concentration of oxygen vacancies, larger amount and better mobility of lattice oxygen of their support. Furthermore, these samples possess sufficient saturated magnetization. Thus, Pd/La_1-xPb_xMnO₃ (x=0.4-0.5) may be suitable for operation in the magnetically stabilized bed reactor.

Key words: diphenyl carbonate, perovskite-type oxides, magnetic catalyst, magnetically stabilized bed reactor

鲁威, 杜治平, 袁华, 田琦峰, 吴元欣 . Synthesis of Diphenyl Carbonate over the Magnetic Catalysts Pd/La_1-xPb_xMnO₃ (x=0.2-0.7)[J]. Chinese Journal of Chemical Engineering, DOI: 10.1016/S1004-9541(13)60435-8.

LU Wei, DU Zhiping, YUAN Hua, TIAN Qifeng, WU Yuanxin . Synthesis of Diphenyl Carbonate over the Magnetic Catalysts Pd/La_1-xPb_xMnO₃ (x=0.2-0.7)[J]. Chin.J.Chem.Eng., DOI: 10.1016/S1004-9541(13)60435-8.

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Synthesis of Diphenyl Carbonate over the Magnetic Catalysts Pd/La_1-xPb_xMnO₃ (x=0.2-0.7)

Synthesis of Diphenyl Carbonate over the Magnetic Catalysts Pd/La_1-xPb_xMnO₃ (x=0.2-0.7)

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