CIESC Journal ›› 2014, Vol. 65 ›› Issue (8): 3012-3018.doi: 10.3969/j.issn.0438-1157.2014.08.023

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Catalytic performance of metal phthalocyanine loaded on MCM-41 molecular sieve in oxidation desulfurization

ZHANG Juan, REN Tengjie, HU Yanhui, LI Junpan, WANG Chunfang, ZHAO Dishun   

  1. College of Chemistry and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, Hebei, China
  • Received:2013-11-11 Revised:2014-04-12 Online:2014-08-05
  • Supported by:

    supported by the National Natural Science Foundation of China (21106032).

Abstract: Eight kinds of metal phthalocyanine (Pc) were loaded into MCM-41 by impregnation method,and were characterized by infrared spectrum. The catalytic activities of the eight supported metal phthalocyanine in the desulfurization were investigated with dibenzothiophene (DBT) as the reaction substrate, air as oxidant and caprolactam-tetrabutylammonium bromide ionic liquid as solvent. The reaction condition was investigated in detail. The results showed that MCM-41/CoPc was the best catalyst among the eight supported metal phthalocyanine catalysts. The removal ratio of DBT is up to 97.56% for 1 h under the optimal reaction condition (the ratio of ionic liquid to model oil 1:1, the amount of catalyst 0.004 g·(10 ml model oil)-1, air flow rate 50 ml·min-1 and room temperature). The oxidized product of DBT is DBT sulphone. Different sulfur compounds were also investigated. The result shows that sulfur removal of different sulfur all are up to 90%. The removal ratio of DBT doesn't decrease obviously, after reused for four times with this catalyst.

Key words: metal phthalocyanine, molecular sieve, dibenzothiophene, catalysis, ionic liquids

CLC Number: 

  • O623.83
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