Synthesis and characterization of a novel platinum molybdenum sulfide containing the Mo6S8 cluster

Thomas J. Paskach; Shane J. Hilsenbeck; R. Kirk Thompson; Robert E. McCarley; Glenn L. Schrader

doi:10.1016/S0925-8388(00)01107-5

Synthesis and characterization of a novel platinum molybdenum sulfide containing the Mo₆S₈ cluster

Thomas J. Paskach, Shane J. Hilsenbeck, R. Kirk Thompson, Robert E. McCarley, Glenn L. Schrader

Research output: Contribution to journal › Article › peer-review

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Abstract

Our previously discovered, low-temperature route for the preparation of ternary molybdenum sulfide cluster compounds containing the Mo₆S₈ structure has been used to synthesize a new Pt (PtMoS) material. Ion-exchange of amorphous NaMoS with [Pt(NH₃)₄]Cl₂ led to incorporation of the [Pt(NH₃)₄]²⁺ cation yielding [Pt(NH₃)₄](Mo₆S₈)S·x(H₂O/MeOH), as confirmed by infrared and X-ray photoelectron spectroscopic (XPS) characterization. XPS indicated that this new platinum material had the reduced molybdenum oxidation state characteristic of ternary molybdenum sulfides containing the Mo₆S₈ structural unit. The surface area of the new PtMoS material was as high as 135 m²/g. Attempts to convert the PtMoS material to a crystalline Chevrel phase PtMo₆S₈ by H₂ reduction at elevated temperatures were unsuccessful. However, H₂ treatment at 400 °C provided material retaining the Mo₆S₈ cluster, probably as amorphous Pt(Mo₆S₈)S. The latter material is a very active hydrodesulfurization (HDS) catalyst, with much higher activity compared to other more stable compounds containing the Mo₆S₈ cluster unit.

Original language	English (US)
Pages (from-to)	169-180
Number of pages	12
Journal	Journal of Alloys and Compounds
Volume	311
Issue number	2
DOIs	https://doi.org/10.1016/S0925-8388(00)01107-5
State	Published - Oct 26 2000
Externally published	Yes

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/S0925-8388(00)01107-5

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title = "Synthesis and characterization of a novel platinum molybdenum sulfide containing the Mo6S8 cluster",

abstract = "Our previously discovered, low-temperature route for the preparation of ternary molybdenum sulfide cluster compounds containing the Mo6S8 structure has been used to synthesize a new Pt (PtMoS) material. Ion-exchange of amorphous NaMoS with [Pt(NH3)4]Cl2 led to incorporation of the [Pt(NH3)4]2+ cation yielding [Pt(NH3)4](Mo6S8)S·x(H2O/MeOH), as confirmed by infrared and X-ray photoelectron spectroscopic (XPS) characterization. XPS indicated that this new platinum material had the reduced molybdenum oxidation state characteristic of ternary molybdenum sulfides containing the Mo6S8 structural unit. The surface area of the new PtMoS material was as high as 135 m2/g. Attempts to convert the PtMoS material to a crystalline Chevrel phase PtMo6S8 by H2 reduction at elevated temperatures were unsuccessful. However, H2 treatment at 400 °C provided material retaining the Mo6S8 cluster, probably as amorphous Pt(Mo6S8)S. The latter material is a very active hydrodesulfurization (HDS) catalyst, with much higher activity compared to other more stable compounds containing the Mo6S8 cluster unit.",

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

note = "Funding Information: We thank Jim Anderegg for assistance in obtaining the XPS data. The microprobe analyses were completed by Dr. Alfred Kracher, Department of Geological and Atmospheric Sciences, at Iowa State University. This work was supported by the US Department of Energy, Office of Basic Energy Sciences, through Ames Laboratory operated by Iowa State University under Contract No. W-7405-Eng-82.",

year = "2000",

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doi = "10.1016/S0925-8388(00)01107-5",

language = "English (US)",

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T1 - Synthesis and characterization of a novel platinum molybdenum sulfide containing the Mo6S8 cluster

AU - Paskach, Thomas J.

AU - Hilsenbeck, Shane J.

AU - Thompson, R. Kirk

AU - McCarley, Robert E.

AU - Schrader, Glenn L.

N1 - Funding Information: We thank Jim Anderegg for assistance in obtaining the XPS data. The microprobe analyses were completed by Dr. Alfred Kracher, Department of Geological and Atmospheric Sciences, at Iowa State University. This work was supported by the US Department of Energy, Office of Basic Energy Sciences, through Ames Laboratory operated by Iowa State University under Contract No. W-7405-Eng-82.

PY - 2000/10/26

Y1 - 2000/10/26

N2 - Our previously discovered, low-temperature route for the preparation of ternary molybdenum sulfide cluster compounds containing the Mo6S8 structure has been used to synthesize a new Pt (PtMoS) material. Ion-exchange of amorphous NaMoS with [Pt(NH3)4]Cl2 led to incorporation of the [Pt(NH3)4]2+ cation yielding [Pt(NH3)4](Mo6S8)S·x(H2O/MeOH), as confirmed by infrared and X-ray photoelectron spectroscopic (XPS) characterization. XPS indicated that this new platinum material had the reduced molybdenum oxidation state characteristic of ternary molybdenum sulfides containing the Mo6S8 structural unit. The surface area of the new PtMoS material was as high as 135 m2/g. Attempts to convert the PtMoS material to a crystalline Chevrel phase PtMo6S8 by H2 reduction at elevated temperatures were unsuccessful. However, H2 treatment at 400 °C provided material retaining the Mo6S8 cluster, probably as amorphous Pt(Mo6S8)S. The latter material is a very active hydrodesulfurization (HDS) catalyst, with much higher activity compared to other more stable compounds containing the Mo6S8 cluster unit.

AB - Our previously discovered, low-temperature route for the preparation of ternary molybdenum sulfide cluster compounds containing the Mo6S8 structure has been used to synthesize a new Pt (PtMoS) material. Ion-exchange of amorphous NaMoS with [Pt(NH3)4]Cl2 led to incorporation of the [Pt(NH3)4]2+ cation yielding [Pt(NH3)4](Mo6S8)S·x(H2O/MeOH), as confirmed by infrared and X-ray photoelectron spectroscopic (XPS) characterization. XPS indicated that this new platinum material had the reduced molybdenum oxidation state characteristic of ternary molybdenum sulfides containing the Mo6S8 structural unit. The surface area of the new PtMoS material was as high as 135 m2/g. Attempts to convert the PtMoS material to a crystalline Chevrel phase PtMo6S8 by H2 reduction at elevated temperatures were unsuccessful. However, H2 treatment at 400 °C provided material retaining the Mo6S8 cluster, probably as amorphous Pt(Mo6S8)S. The latter material is a very active hydrodesulfurization (HDS) catalyst, with much higher activity compared to other more stable compounds containing the Mo6S8 cluster unit.

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JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 2

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Synthesis and characterization of a novel platinum molybdenum sulfide containing the Mo₆S₈ cluster

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