Pd/CuO-Ce0.5Mn0.5O2催化剂氧化羰基化合成碳酸二苯酯

›› 2008, Vol. 8 ›› Issue (6): 1120-1125.

Pd/CuO-Ce0.5Mn0.5O2催化剂氧化羰基化合成碳酸二苯酯

邬茂袁华杜治平吴元欣

武汉工程大学化工与制药学院武汉工程大学化工与制药学院绿色化工过程省部共建教育部重点实验室武汉工程大学化工与制药学院绿色化工过程省部共建教育部重点实验室武汉化工学院化工与制药学院

收稿日期:2008-07-29 修回日期:2008-10-14 出版日期:2008-12-20 发布日期:2008-12-20
通讯作者: 袁华

Synthesis of Diphenyl Carbonate by Oxidative Carbonylation of Phenol with Pd/CuO-Ce0.5Mn0.5O2 Catalyst

YUAN Hua DU Zhi-ping WU Yuan-xin

School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology School of chemical engineering & pharmacy, Wuhan Institute of Chemical Technology

Received:2008-07-29 Revised:2008-10-14 Online:2008-12-20 Published:2008-12-20
Contact: YUAN Hua

摘要/Abstract

摘要： 采采用2种CuO引入方法制备了CuO-Ce0.5Mn0.5O2载体，再通过沉淀法负载活性组分Pd得到了0.5%Pd/CuO-Ce0.5Mn0.5O2催化剂，以XRD, SEM, BET等手段对催化剂进行了表征. 将该催化剂用于苯酚氧化羰基化合成碳酸二苯酯的反应，考察了引入CuO对催化剂催化活性的影响. 结果表明，采用溶胶-凝胶法添加不同含量的CuO时，载体的孔结构及活性组分在载体表面的分散都得到了不同程度的改善；在CuO添加量为9%(w)的条件下，反应在温度75℃、压力5 MPa下进行12 h，碳酸二苯酯收率可达17.06%.

关键词: 碳酸二苯酯, 氧化羰基化, 铈锰复合氧化物, 氧化铜, 负载型催化剂

Abstract: CuO-Ce0.5Mn0.5O2 support was prepared with two CuO doping methods and used in direct synthesis of diphenyl carbonate by oxidative carbonylation of phenol. 0.5%Pd/CuO-Ce0.5Mn0.5O2 catalyst was prepared through precipitation method using PdCl2 as the precursor of active Pd component. The catalyst was characterized by XRD, SEM and BET techniques. The effects of preparation methods of support on the activity of catalyst were investigated. The catalytic activity test results showed that the physical structure of catalyst could be improved when CuO was doped by sol-gel method. The diphenyl carbonate yield could reach 17.06% under the conditions of CuO doped amount 9%(w), reaction temperature 75℃, pressure 5 MPa and reaction time 12 h.

Key words: diphenyl carbonate, oxidative carbonylation, cerium and manganese complex oxide, copper oxide, supported catalyst

中图分类号:

O643

邬茂袁华杜治平吴元欣. Pd/CuO-Ce0.5Mn0.5O2催化剂氧化羰基化合成碳酸二苯酯[J]. , 2008, 8(6): 1120-1125.

YUAN Hua DU Zhi-ping WU Yuan-xin. Synthesis of Diphenyl Carbonate by Oxidative Carbonylation of Phenol with Pd/CuO-Ce0.5Mn0.5O2 Catalyst[J]. , 2008, 8(6): 1120-1125.

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