Metal cluster hydrodesulfurization catalysts based on ternary lanthanum molybdenum sulfides

Shane J. Hilsenbeck, Robert E. McCarley, R. Kirk Thompson, Lucy C. Flanagan, Glenn L. Schrader

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

Hydrodesulfurization (HDS) catalysis by a new group of reduced ternary molybdenum sulfides involving Mo6S8 clusters has been investigated. A low temperature synthesis route was used to produce LaMoS materials with initial surface areas near 200 m2/g. Pretreatment at 200-700°C in flowing H2 yielded amorphous materials that retained the lower Mo oxidation state characteristic of metal clusters (Mo6S8). Higher temperature pretreatment (800°C) resulted in formation of the corresponding Chevrel phase. The LaMoS materials prepared and pretreated at the lower temperatures had similar thiophene and benzothiophene HDS rates to those for Chevrel phases. After HDS reaction, the surface areas of the catalysts were near 30-50 m2/g.

Original languageEnglish (US)
Pages (from-to)13-24
Number of pages12
JournalJournal of Molecular Catalysis A: Chemical
Volume122
Issue number1
DOIs
StatePublished - Jul 18 1997

Keywords

  • Catalyst characterization (FTIR/LRS/XPS/XRD)
  • Chevrel phase
  • Hydrodesulfurization
  • Metal cluster catalysis
  • Molybdenum ternary sulfides

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology
  • Physical and Theoretical Chemistry

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