CRCU

Chemical Research in Chinese Universities ›› 1992, Vol. 8 ›› Issue (3): 188-195.

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Spectroscopic Characterization of Mo-Co-S and Mo-Fe-S Complexes-derived Catalysts for Desulfurization and Denitrification

LIN Guo-dong, LIU Yu-da, YANG Yi-quan, ZHANG Hong-bin   

  1. Department of Chemistry and Institute, of Physical Chemistry, Xiamen University, Xiamen, 361005
  • Received:1991-05-08 Online:1992-08-24 Published:2011-09-09
  • Supported by:

    Supported by the National Natural Science Foundation of China

PDF (PC)

Abstract: The characteristic studies, by means of LR, UV-Vis and XPS spectroscopies, of the preparation process of Mo-Co-Sand Mo-Fe-Scatalysts for HDS and HDN, derived from (NH4)2MoS4-CoCl2and (NH4)2MoS4-FeCl2complexes supported on γ-Al2O3, respectively, indicate that the catalytically essential moiety on the surface of the catalysts is dominantly some sulfido-bimetallic species with such a structural unit (M'=Co or Fe), and both Co and Fe, served as promoters, can donate electrons to Mo probably via bridging-S. The nature of active-sites and the mechanism of promotion are discussed according to the results.

Key words: Mo-Co-S and Mo-Fe-S catalysts, Desulfurization and denitrification, Spectroscopic characterization