催化学报

催化学报 ›› 2011, Vol. 32 ›› Issue (2): 280-285.DOI: 10.1016/S1872-2067(10)60176-3

• 研究论文 • 上一篇    下一篇

Hydrogenation of Olefins Catalyzed by Polymer-Supported Palladium-Imidazole

Udayakumar VELU1, Alexander STANISLAUS1, Gayathri VIRUPAIAH1,*, Shivakumaraiah2, Viswanathan BALASUBRAMANIAN3   

  1. 1Department of Studies in Chemistry, Central College Campus, Bangalore University, Bangalore 560 001, India;  2Siddaganga Institute of Technology, Tumkur, Karnataka 572 103, India;  3National Centre for Catalysis Research, I.I.T. Madras., Chennai 600 036, India
  • 收稿日期:2010-09-19 修回日期:2010-11-11 出版日期:2011-01-26 发布日期:2014-06-25

Hydrogenation of Olefins Catalyzed by Polymer-Supported Palladium-Imidazole

Udayakumar VELU1, Alexander STANISLAUS1, Gayathri VIRUPAIAH1,*, Shivakumaraiah2, Viswanathan BALASUBRAMANIAN3   

  1. 1Department of Studies in Chemistry, Central College Campus, Bangalore University, Bangalore 560 001, India; 2Siddaganga Institute of Technology, Tumkur, Karnataka 572 103, India; 3National Centre for Catalysis Research, I.I.T. Madras., Chennai 600 036, India
  • Received:2010-09-19 Revised:2010-11-11 Online:2011-01-26 Published:2014-06-25

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摘要： A polymer-supported palladium-imidazole catalyst was used to catalyze the hydrogenation of various olefins under mild conditions. The rate of hydrogenation was studied. The effects of factors such as substrate concentration, catalyst concentration, partial pressure of hydrogen and temperature on initial rate of reaction of selected olefins were investigated. A mechanism for the reaction was proposed from the rate equation. The effects of the solvent and structure of the olefin on the rate of hydrogenation were investigated. The catalyst showed good reusability without any leaching of metal from the support. The homologous analog of the polymer-supported catalyst could not be used as catalyst for the hydrogenation of olefins in methanol because there was precipitation of the metal during reaction.

关键词: polymer-supported palladium-imidazole catalyst, cyclohexene, relative reactivity, sequential hydrogenation, recycling efficiency

Abstract: A polymer-supported palladium-imidazole catalyst was used to catalyze the hydrogenation of various olefins under mild conditions. The rate of hydrogenation was studied. The effects of factors such as substrate concentration, catalyst concentration, partial pressure of hydrogen and temperature on initial rate of reaction of selected olefins were investigated. A mechanism for the reaction was proposed from the rate equation. The effects of the solvent and structure of the olefin on the rate of hydrogenation were investigated. The catalyst showed good reusability without any leaching of metal from the support. The homologous analog of the polymer-supported catalyst could not be used as catalyst for the hydrogenation of olefins in methanol because there was precipitation of the metal during reaction.

Key words: polymer-supported palladium-imidazole catalyst, cyclohexene, relative reactivity, sequential hydrogenation, recycling efficiency