Chinese Journal of Catalysis

Chinese Journal of Catalysis ›› 2011, Vol. 32 ›› Issue (2): 235-239.DOI: 10.1016/S1872-2067(10)60170-2

• Research Briefing • Previous Articles     Next Articles

Ultra-deep Oxidative Desulfurization of Fuel Oil Catalyzed by Dawson-Type Polyoxotungstate Emulsion Catalysts

ZHANG Yongna1,2, WANG Lu1,2, ZHANG Yuliang1,2, JIANG Zongxuan1,#, LI Can1,*   

  1. 1State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning China; 2Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2010-11-19 Revised:2010-12-29 Online:2011-01-26 Published:2014-06-25

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Abstract: The Dawson-type polyoxotungstate emulsion catalysts Q18P2W18, Q18P2W17, and Q18P2W12 were successfully synthesized and characterized by IR and 31P MAS NMR. They were used for the oxidation of sulfur-containing compounds such as 4,6-dimethyldibenzothiophene (4,6-DMDBT), dibenzothiophene (DBT), benzothiophene (BT), and 2,5-dimethythiophene (2,5-DMT) with H2O2 as an oxidant under mild conditions. The activity of the catalysts decreased in the order: Q18P2W12 > Q18P2W17 > Q18P2W18. The oxidative reactivity of the sulfur-containing compounds decreased according to DBT > 4,6-DMDBT > BT > 2,5-DMT. BT was completely oxidized into the corresponding sulfone upon catalysis by Q18P2W12 at 60 °C for 30 min.

Key words: Dawson-type, polyoxotungstate, emulsion catalyst, oxidative desulfurization