Chinese Journal of Catalysis ›› 2014, Vol. 35 ›› Issue (6): 914-921.DOI: 10.1016/S1872-2067(14)60102-9

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Reduction of nitrobenzene catalyzed by carbon materials

Shuchang Wua,b, Guodong Wena, Bingwei Zhonga, Bingsen Zhanga, Xianmo Gua, Ning Wangc, Dangsheng Sua   

  1. a Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China;
    b Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    c Department of Physics, The Hong Kong University of Science and Technology, Hong Kong, China
  • Received:2014-03-15 Revised:2014-03-27 Online:2014-05-30 Published:2014-06-03
  • Supported by:

    This work was supported by the National Basic Research Program of China (973 Program, 2011CBA00504), the National Natural Science Foundation of China (21133010, 51221264, 21261160487, 21203215).

Abstract:

The reduction of nitrobenzene catalyzed by different carbon materials (mainly carbon nanotubes) was studied. TGA, TPD, TEM, N2 adsorption-desorption, and Raman spectroscopy were used to show that it was oxygenated groups that gave catalytic activity, while the surface area, pore structure, morphology, structural defects and Fe impurities in the catalysts did not have a significant influence on the activity. The carbonyl group played an important role, but the carboxylic group and anhydride adversely affected the reaction. The conjugated π system, which was necessary for electron transfer and nitrobenzene adsorption, was another critical factor. The reaction proceeded through the direct route in which the intermediate nitrosobenzene was converted directly to aniline quickly.

Key words: Carbon materials, Oxygenated groups, Active sites, Nitrobenzene, Reduction