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

doi:10.1016/S1381-1169(96)00457-8

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 journal › Article › peer-review

27 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 language	English (US)
Pages (from-to)	13-24
Number of pages	12
Journal	Journal of Molecular Catalysis A: Chemical
Volume	122
Issue number	1
DOIs	https://doi.org/10.1016/S1381-1169(96)00457-8
State	Published - Jul 18 1997
Externally published	Yes

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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10.1016/S1381-1169(96)00457-8

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title = "Metal cluster hydrodesulfurization catalysts based on ternary lanthanum molybdenum sulfides",

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.",

keywords = "Catalyst characterization (FTIR/LRS/XPS/XRD), Chevrel phase, Hydrodesulfurization, Metal cluster catalysis, Molybdenum ternary sulfides",

author = "Hilsenbeck, {Shane J.} and McCarley, {Robert E.} and Thompson, {R. Kirk} and Flanagan, {Lucy C.} and Schrader, {Glenn L.}",

note = "Funding Information: XPS characterization was performed with Jim Anderegg of the Ames Laboratory. Steve Gerdes assisted in obtaining surface area measurements. The microprobe analyses were completed by Dr. Alfred Kracher, Department of Geological and Atmospheric Sciences, at Iowa State University. This research was sponsored by a grant from Akzo Nobel. Assistance from the Ames Laboratory is also acknowledged. The Ames Laboratory is operated for the U.S. Department of Energy by Iowa State University under Contract No. W-7405-Eng-82.",

year = "1997",

month = jul,

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doi = "10.1016/S1381-1169(96)00457-8",

language = "English (US)",

volume = "122",

pages = "13--24",

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T1 - Metal cluster hydrodesulfurization catalysts based on ternary lanthanum molybdenum sulfides

AU - Hilsenbeck, Shane J.

AU - McCarley, Robert E.

AU - Thompson, R. Kirk

AU - Flanagan, Lucy C.

AU - Schrader, Glenn L.

N1 - Funding Information: XPS characterization was performed with Jim Anderegg of the Ames Laboratory. Steve Gerdes assisted in obtaining surface area measurements. The microprobe analyses were completed by Dr. Alfred Kracher, Department of Geological and Atmospheric Sciences, at Iowa State University. This research was sponsored by a grant from Akzo Nobel. Assistance from the Ames Laboratory is also acknowledged. The Ames Laboratory is operated for the U.S. Department of Energy by Iowa State University under Contract No. W-7405-Eng-82.

PY - 1997/7/18

Y1 - 1997/7/18

N2 - 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.

AB - 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.

KW - Catalyst characterization (FTIR/LRS/XPS/XRD)

KW - Chevrel phase

KW - Hydrodesulfurization

KW - Metal cluster catalysis

KW - Molybdenum ternary sulfides

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Metal cluster hydrodesulfurization catalysts based on ternary lanthanum molybdenum sulfides

Abstract

Keywords

ASJC Scopus subject areas

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