SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2013, Vol. 21 ›› Issue (6): 622-626.DOI: 10.1016/S1004-9541(13)60497-8

• 催化、动力学与反应工程 • 上一篇    下一篇

Study on Deactivation by Sulfur and Regeneration of Pd/C Catalyst in Hydrogenation of N-(3-nitro-4-methoxyphenyl) Acetamide

张群峰, 吕井辉, 马磊, 卢春山, 刘维, 李小年   

  1. Industrial Catalysis Institute, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China
  • 收稿日期:2012-12-13 修回日期:2013-03-09 出版日期:2013-06-28 发布日期:2013-07-03
  • 通讯作者: LI Xiaonian
  • 基金资助:

    Supported by the Natural Science Foundation of Zhejiang Provincial (LY12B03009) and Program for Zhejiang Leading Team of Science and Technology Innovation (2011R09020-03).

Study on Deactivation by Sulfur and Regeneration of Pd/C Catalyst in Hydrogenation of N-(3-nitro-4-methoxyphenyl) Acetamide

ZHANG Qunfeng, LÜ Jinghui, MA Lei, LU Chunshan, LIU Wei, LI Xiaonian   

  1. Industrial Catalysis Institute, State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China
  • Received:2012-12-13 Revised:2013-03-09 Online:2013-06-28 Published:2013-07-03
  • Contact: LI Xiaonian
  • Supported by:

    Supported by the Natural Science Foundation of Zhejiang Provincial (LY12B03009) and Program for Zhejiang Leading Team of Science and Technology Innovation (2011R09020-03).

摘要: Deactivation of Pd/C catalyst often occurs in liquid hydrogenation using industrial materials. For instance, the Pd/C catalyst is deactivated severely in the hydrogenation of N-(3-nitro-4-methoxyphenyl) acetamide. In this study, the chemisorption of sulfur on the surface of deactivated Pd/C was detected by energy dispersive spectrometer and X-ray photoelectron spectroscopy. Sulfur compounds poison the Pd/C catalyst and increase the formation of azo deposit, reducing the activity of catalyst. We report a mild method to regenerate the Pd/C catalyst: wash the deposit by N,N-dimethylformamide and oxidize the chemisorbed sulfur by hot air. The regenerated Pd/C catalyst can be reused at least ten runs with stable activity.

关键词: Pd/C catalyst, hydrogenation, deactivation, regeneration, sulfur

Abstract: Deactivation of Pd/C catalyst often occurs in liquid hydrogenation using industrial materials. For instance, the Pd/C catalyst is deactivated severely in the hydrogenation of N-(3-nitro-4-methoxyphenyl) acetamide. In this study, the chemisorption of sulfur on the surface of deactivated Pd/C was detected by energy dispersive spectrometer and X-ray photoelectron spectroscopy. Sulfur compounds poison the Pd/C catalyst and increase the formation of azo deposit, reducing the activity of catalyst. We report a mild method to regenerate the Pd/C catalyst: wash the deposit by N,N-dimethylformamide and oxidize the chemisorbed sulfur by hot air. The regenerated Pd/C catalyst can be reused at least ten runs with stable activity.

Key words: Pd/C catalyst, hydrogenation, deactivation, regeneration, sulfur