催化学报

催化学报 ›› 2007, Vol. 28 ›› Issue (1): 5-9.

• 研究论文 • 上一篇    下一篇

负载PbO催化剂对苯胺与碳酸二甲酯合成苯氨基甲酸甲酯的催化性能

康武魁1,2,康涛1,马飞1,赵永峰3,崔黎黎3,姚洁1,王公应1   

  1. 1 中国科学院成都有机化学研究所, 四川成都 610041; 2 莱阳农学院理学院, 山东青岛 266109; 3 胜利油田胜利化工有限公司, 山东东营 257503
  • 收稿日期:2007-01-25 出版日期:2007-01-25 发布日期:2010-08-28

Catalytic Performance of Supported PbO Catalysts for Synthesis of Methyl N-phenyl Carbamate from Aniline and Dimethyl Carbonate

KANG Wukui~ 1; 2; KANG Tao~1; MA Fei~1; ZHAO Yongfeng~3; CUI Lili~3; YAO Jie~1; WANG Gongying~ 1   

  1. 1 Chengdu Institute of Organic Chemistry; The Chinese Academy of Sciences; Chengdu 610041; Sichuan; China; 2 College of Science; Laiyang Agriculture College; Qingdao 266109; Shandong; 3 Shengli Chemical Company of SINOPEC Shengli Oilfield; Dongying 257503; China
  • Received:2007-01-25 Online:2007-01-25 Published:2010-08-28

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1056

被引次数

64

摘要： 考察了几种负载PbO催化剂对苯胺(An)与碳酸二甲酯(DMC)反应合成苯氨基甲酸甲酯(MPC)的催化性能. 结果表明, PbO/SiO2对该反应表现出很高的催化活性. 当w(PbO)=3.6%, n(PbO)/n(An)=1%, n(DMC)/n(An)=5, θ=160 ℃和t=4 h时, MPC收率达到99.5%. PbO/SiO2容易从反应体系中分离,且可重复使用5次,催化活性基本保持不变,使用寿命较长.

关键词: 苯胺, 碳酸二甲酯, 苯氨基甲酸甲酯, 氧化铅, 氧化硅, 负载型催化剂

Abstract: The catalytic performance of a series of supported PbO catalysts for synthesis of methyl N-phenyl carbamate (MPC) from aniline (An) and dimethyl carbonate (DMC) was studied. It was found that PbO/SiO_2 showed the best catalytic performance. The yield of MPC was 99.5% under the conditions of n(PbO) / n(An) =1%, n(DMC) / n(An) =5, θ=160 ℃, and t=4 h. The PbO/SiO_2 catalyst was easily separated from the product solution, and the catalyst remained higher activity after reuse 5 times, which showed that the lifespan of PbO/SiO2 was long.

Key words: aniline, dimethyl carbonate, methyl N-phenyl carbamate, lead oxide, silica, supported catalyst