Characterization of carbon- and alumina-supported NiW and CoW sulfided catalysts

Y. Meer, van der; M.J. Vissenberg; V.H.J. Beer, de; J.A.R. Veen, van; A.M. Kraan, van der

doi:10.1023/A:1021211103003

Characterization of carbon- and alumina-supported NiW and CoW sulfided catalysts

Y. Meer, van der, M.J. Vissenberg, V.H.J. Beer, de, J.A.R. Veen, van, A.M. Kraan, van der

Inorganic Materials & Catalysis

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

9 Citations (Scopus)

Abstract

Sulfided NiW and CoW catalysts supported on activated carbon and alumina were characterized with 57Co Mössbauer emission spectroscopy (MES) and EXAFS at the W–LIII edge. NiW catalysts were studied with MES by probing the Ni atoms with 57Co. MES results demonstrate that the Ni–W–S phase is present in sulfided NiW catalysts. Formation of Co9S8-type phases could be related to the lower thiophene HDS activity of CoW catalysts. W EXAFS showed that addition of Co or Ni to a W/Al2O3 catalyst results in a higher W sulfidation degree. No structural differences were found for carbon- and alumina-supported catalysts, in spite of the two times larger thiophene HDS activity of carbon-supported NiW.

Original language	English
Pages (from-to)	51-57
Journal	Hyperfine Interactions
Volume	139-140
Issue number	1/4
DOIs	https://doi.org/10.1023/A:1021211103003
Publication status	Published - 2002

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title = "Characterization of carbon- and alumina-supported NiW and CoW sulfided catalysts",

abstract = "Sulfided NiW and CoW catalysts supported on activated carbon and alumina were characterized with 57Co M{\"o}ssbauer emission spectroscopy (MES) and EXAFS at the W–LIII edge. NiW catalysts were studied with MES by probing the Ni atoms with 57Co. MES results demonstrate that the Ni–W–S phase is present in sulfided NiW catalysts. Formation of Co9S8-type phases could be related to the lower thiophene HDS activity of CoW catalysts. W EXAFS showed that addition of Co or Ni to a W/Al2O3 catalyst results in a higher W sulfidation degree. No structural differences were found for carbon- and alumina-supported catalysts, in spite of the two times larger thiophene HDS activity of carbon-supported NiW.",

author = "{Meer, van der}, Y. and M.J. Vissenberg and {Beer, de}, V.H.J. and {Veen, van}, J.A.R. and {Kraan, van der}, A.M.",

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language = "English",

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journal = "Hyperfine Interactions",

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T1 - Characterization of carbon- and alumina-supported NiW and CoW sulfided catalysts

AU - Meer, van der, Y.

AU - Vissenberg, M.J.

AU - Beer, de, V.H.J.

AU - Veen, van, J.A.R.

AU - Kraan, van der, A.M.

PY - 2002

Y1 - 2002

N2 - Sulfided NiW and CoW catalysts supported on activated carbon and alumina were characterized with 57Co Mössbauer emission spectroscopy (MES) and EXAFS at the W–LIII edge. NiW catalysts were studied with MES by probing the Ni atoms with 57Co. MES results demonstrate that the Ni–W–S phase is present in sulfided NiW catalysts. Formation of Co9S8-type phases could be related to the lower thiophene HDS activity of CoW catalysts. W EXAFS showed that addition of Co or Ni to a W/Al2O3 catalyst results in a higher W sulfidation degree. No structural differences were found for carbon- and alumina-supported catalysts, in spite of the two times larger thiophene HDS activity of carbon-supported NiW.

AB - Sulfided NiW and CoW catalysts supported on activated carbon and alumina were characterized with 57Co Mössbauer emission spectroscopy (MES) and EXAFS at the W–LIII edge. NiW catalysts were studied with MES by probing the Ni atoms with 57Co. MES results demonstrate that the Ni–W–S phase is present in sulfided NiW catalysts. Formation of Co9S8-type phases could be related to the lower thiophene HDS activity of CoW catalysts. W EXAFS showed that addition of Co or Ni to a W/Al2O3 catalyst results in a higher W sulfidation degree. No structural differences were found for carbon- and alumina-supported catalysts, in spite of the two times larger thiophene HDS activity of carbon-supported NiW.

U2 - 10.1023/A:1021211103003

DO - 10.1023/A:1021211103003

M3 - Article

SN - 0304-3843

VL - 139-140

SP - 51

EP - 57

JO - Hyperfine Interactions

JF - Hyperfine Interactions

IS - 1/4

ER -

Characterization of carbon- and alumina-supported NiW and CoW sulfided catalysts

Abstract

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