Carbon-supported sulfide catalysts

Journal Article · Fri Apr 01 04:00:00 EST 1983 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(83)90263-4· OSTI ID:5683208

Duchet, J C; Van Oers, E M; De Beer, V H.J.; Prins, R

The activities of sulfided Mo/C, W/C, Co/C, Ni/C, Co-Mo/C, and Ni-W/C catalysts for thiophene hydrodesulfurization and butene hydrogenation were studied using a flow microreactor operating at atmospheric pressure. The following parameters were varied: type of carbon support, carbon pretreatment, catalyst preparation method, and content of active material. The results are compared with those obtained for series of sulfided Mo/..gamma..-Al/sub 2/O/sub 3/, W/..gamma..-Al/sub 2/O/sub 3/, Mo/SiO/sub 2/, and W/SiO/sub 2/. Some samples, viz., Mo/C, Co/C, and Co-Mo/C, were also studied by X-ray photoelectron spectroscopy (XPS). The carbon-supported catalysts demonstrated outstanding performance for thiophene hydrodesulfurization. XPS analysis showed the presence of low-valence-state sulfur, e.g., S/sup -/ or (S-S)/sup 2 -/, in Mo/C and Co/C catalysts with low molybdenum or cobalt content. These sulfur species are supposedly connected with the catalytic activity for hydrodesulfurization. Co/C and Ni/C were found to have a hydrodesulfurization activity which was higher (Co) or the same (Ni) as that measured for Mo/C or W/C. Therefore Co (Ni) ions in Co (Ni)-Mo (W)/C catalysts are considered as promoters for the MoS/sub 2/ (WS/sub 2/) phase (low Co/Mo or Ni/W ratios) or as additional active species.

• Research Organization: Eindhoven Univ. of Tech., Netherlands
• OSTI ID: 5683208
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 80:2; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKENES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BUTENES
CARBON
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
COBALT
COMPARATIVE EVALUATIONS
DESULFURIZATION
ELECTRON SPECTROSCOPY
ELEMENTS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROGENATION
METALS
MOLYBDENUM
NICKEL
NONMETALS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
SILICON COMPOUNDS
SILICON OXIDES
SPECTROSCOPY
SULFIDES
SULFUR COMPOUNDS
THIOPHENE
TRANSITION ELEMENTS
TUNGSTEN
X-RAY SPECTROSCOPY