Chevrel Phase HDS Catalysts

Structural and Compositional Relationships to Catalytic Activity

Glenn L Schrader, M. E. Ekman

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The catalytic activities of "reduced" molybdenum sulfides, known as Chevrel phases, have been evaluated for hydrodesulfurization of thiophene and benzothiophene and hydrogenation of 1-butene. These materials have been found to have hydrodesulfurization activities comparable to or greater than model unpromoted and cobalt-promoted MoS2 catalysts; in contrast, Chevrel phases exhibit low activities for 1-butene hydrogenation. In this paper, a general discussion of the relationship between the solid state chemistry of Chevrel phases and their catalytic activity is presented. Structural properties appear to be an important factor: large cation Chevrel phases are the most active and stable materials. It is also likely that the most active phases resist surface oxidation which may occur if the ternary metal components undergo surface migration. "Reduced" molybdenum oxidation states are associated with the active sites, in direct analogy with conventional catalysts.

Original languageEnglish (US)
Pages (from-to)41-66
Number of pages26
JournalStudies in Surface Science and Catalysis
Volume50
Issue numberC
DOIs
StatePublished - 1989
Externally publishedYes

Fingerprint

Hydrodesulfurization
butenes
Butenes
Molybdenum
Hydrogenation
hydrogenation
catalytic activity
Catalyst activity
molybdenum sulfides
catalysts
Thiophenes
Oxidation
oxidation
Catalysts
phase contrast
Thiophene
Cobalt
thiophenes
molybdenum
Cations

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Catalysis
  • Physical and Theoretical Chemistry
  • Materials Chemistry
  • Surfaces, Coatings and Films

Cite this

Chevrel Phase HDS Catalysts : Structural and Compositional Relationships to Catalytic Activity. / Schrader, Glenn L; Ekman, M. E.

In: Studies in Surface Science and Catalysis, Vol. 50, No. C, 1989, p. 41-66.

Research output: Contribution to journalArticle

@article{2ee34bb858a243aeb43c1e3f12afa1ad,
title = "Chevrel Phase HDS Catalysts: Structural and Compositional Relationships to Catalytic Activity",
abstract = "The catalytic activities of {"}reduced{"} molybdenum sulfides, known as Chevrel phases, have been evaluated for hydrodesulfurization of thiophene and benzothiophene and hydrogenation of 1-butene. These materials have been found to have hydrodesulfurization activities comparable to or greater than model unpromoted and cobalt-promoted MoS2 catalysts; in contrast, Chevrel phases exhibit low activities for 1-butene hydrogenation. In this paper, a general discussion of the relationship between the solid state chemistry of Chevrel phases and their catalytic activity is presented. Structural properties appear to be an important factor: large cation Chevrel phases are the most active and stable materials. It is also likely that the most active phases resist surface oxidation which may occur if the ternary metal components undergo surface migration. {"}Reduced{"} molybdenum oxidation states are associated with the active sites, in direct analogy with conventional catalysts.",
author = "Schrader, {Glenn L} and Ekman, {M. E.}",
year = "1989",
doi = "10.1016/S0167-2991(08)60488-7",
language = "English (US)",
volume = "50",
pages = "41--66",
journal = "Studies in Surface Science and Catalysis",
issn = "0167-2991",
publisher = "Elsevier BV",
number = "C",

}

TY - JOUR

T1 - Chevrel Phase HDS Catalysts

T2 - Structural and Compositional Relationships to Catalytic Activity

AU - Schrader, Glenn L

AU - Ekman, M. E.

PY - 1989

Y1 - 1989

N2 - The catalytic activities of "reduced" molybdenum sulfides, known as Chevrel phases, have been evaluated for hydrodesulfurization of thiophene and benzothiophene and hydrogenation of 1-butene. These materials have been found to have hydrodesulfurization activities comparable to or greater than model unpromoted and cobalt-promoted MoS2 catalysts; in contrast, Chevrel phases exhibit low activities for 1-butene hydrogenation. In this paper, a general discussion of the relationship between the solid state chemistry of Chevrel phases and their catalytic activity is presented. Structural properties appear to be an important factor: large cation Chevrel phases are the most active and stable materials. It is also likely that the most active phases resist surface oxidation which may occur if the ternary metal components undergo surface migration. "Reduced" molybdenum oxidation states are associated with the active sites, in direct analogy with conventional catalysts.

AB - The catalytic activities of "reduced" molybdenum sulfides, known as Chevrel phases, have been evaluated for hydrodesulfurization of thiophene and benzothiophene and hydrogenation of 1-butene. These materials have been found to have hydrodesulfurization activities comparable to or greater than model unpromoted and cobalt-promoted MoS2 catalysts; in contrast, Chevrel phases exhibit low activities for 1-butene hydrogenation. In this paper, a general discussion of the relationship between the solid state chemistry of Chevrel phases and their catalytic activity is presented. Structural properties appear to be an important factor: large cation Chevrel phases are the most active and stable materials. It is also likely that the most active phases resist surface oxidation which may occur if the ternary metal components undergo surface migration. "Reduced" molybdenum oxidation states are associated with the active sites, in direct analogy with conventional catalysts.

UR - http://www.scopus.com/inward/record.url?scp=77956914545&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77956914545&partnerID=8YFLogxK

U2 - 10.1016/S0167-2991(08)60488-7

DO - 10.1016/S0167-2991(08)60488-7

M3 - Article

VL - 50

SP - 41

EP - 66

JO - Studies in Surface Science and Catalysis

JF - Studies in Surface Science and Catalysis

SN - 0167-2991

IS - C

ER -