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Petroleum Chemistry

, Volume 57, Issue 12, pp 1058–1064 | Cite as

Mono- and Bimetallic Mo(W)S2/Al2O3 and Mo(W)S2/SBA-15 Hydrotreating Catalysts Based on SiMo12 and SiW12 Heteropoly Acids

  • M. S. Nikulshina
  • A. V. Mozhaev
  • A. A. Sheldaisov-Meshcheryakov
  • P. A. Nikulshin
Article

Abstract

Mono- and bimetallic Mo(W)S2 catalysts supported on γ-Al2O3 and SBA-15 have been prepared using the Keggin heteropoly acids (HPAs) H4SiMo12O40 and H4SiW12O40. The catalyst samples have been analyzed by temperature-programmed reduction with hydrogen, high-resolution transmission electron microscopy, and X-ray photoelectron spectroscopy. Catalytic properties have been examined in the joint hydrotreating of dibenzothiophene and naphthalene on a flow-through unit. It has been shown that the use of mesoporous silica SBA-15 as a support can reduce the average length of Mo(W)S2 particles from 4.9 to 3.7 nm and increase the average number of layers and the particle size of the active phase, changes that lead to an increase in catalytic activity by a factor of ~3 relative to the alumina-supported counterparts. The use of a mixture of SiMo12HPA and SiW12HPA for preparing MoW catalysts leads to a significant enhancement of catalytic activity, which is apparently due to the formation of mixed active sites.

Keywords

hydrotreating heteropoly acid active phase MoWS2 dibenzothiophene naphthalene 

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Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • M. S. Nikulshina
    • 1
  • A. V. Mozhaev
    • 1
  • A. A. Sheldaisov-Meshcheryakov
    • 1
  • P. A. Nikulshin
    • 1
    • 2
  1. 1.Samara State Technical UniversitySamaraRussia
  2. 2.All-Russia Research Institute for Oil RefiningMoscowRussia

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