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Indexed by:期刊论文

Date of Publication:2012-07-01

Journal:CATALYSIS LETTERS

Included Journals:SCIE、EI

Volume:142

Issue:7

Page Number:854-859

ISSN No.:1011-372X

Key Words:Ship-in-a-bottle; Molybdenum sulfide; Mesoporous material; Hydrodesulfurization

Abstract:MoS2/MCM-41 catalysts have been prepared by thermal decomposition of MCM-41 with cetyltrimethylammonium thiomolybdate, which was synthesized by reaction between ammonium thiomolybdate and cetyltrimethylammonium bromide left in the pore channel of MCM-41. The obtained catalysts exhibit type IV adsorption-desorption isotherms, indicating that MCM-41 mesoporous structure is retained during the synthesis process. With increasing loading of MoS2, the catalytic activity of MoS2/MCM-41 for HDS of DBT first increases, followed by a leveling off above 10 % MoS2 loading, likely due to lack of accessibility to additional active sites. For the first time over MoS2 catalysts, the DDS (i.e., hydrogenolysis) reaction pathway is favored with 100 % selectivity. This unique performance is associated with single layer MoS2 sites stabilized within the pores of the MCM-41 support.
   MoS2/MCM-41 catalysts have been prepared by thermal decomposition of cetyltrimethylammonium thiomolybdate in MCM-41, which was synthesized by reaction between ammonium thiomolybdate and cetyltrimethylammonium bromide left in the mesoporous channel.