Catalytic functionalities of WS sub 2 /ZrO sub 2
- Indian Inst. of Chemical Technology, Hyderabad (India)
- Osmania Univ., Hyderabad (India)
The effect of ZrO{sub 2}support on dispersion and catalytic functionalities of WS{sub 2} are investigated using oxygen chemisorption, XRD, and surface area measurements. The surface area studies on oxide catalysts indicated that WO{sub 3} is highly dispersed below 6-8 wt% tungsten. Analysis of X-ray diffraction results also led to similar conclusions. Oxygen chemisorption on sulfided catalysts indicated that tungsten is well dispersed below 6-8 wt% in the sulfided state also. From the trends of activity for hydrosulfurization and hydrogenation (HDS and HYD) and oxygen chemisorption variation with W loading it is concluded that oxygen chemisorption is not specific to any one of the functionalities. The variation intrinsic activity with loading in case of HDS and HYD indicated that these two functionalities originate from a different set of sites.
- OSTI ID:
- 7241383
- Journal Information:
- Journal of Catalysis; (United States), Journal Name: Journal of Catalysis; (United States) Vol. 133:1; ISSN 0021-9517; ISSN JCTLA
- Country of Publication:
- United States
- Language:
- English
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISORPTION
COAL LIQUEFACTION
COAL LIQUIDS
COHERENT SCATTERING
DESULFURIZATION
DIFFRACTION
DISTRIBUTION
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
HYDROGENATION
LIQUEFACTION
LIQUIDS
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PETROLEUM
PROCESSING
QUANTITY RATIO
REFINING
REFRACTORY METAL COMPOUNDS
SCATTERING
SEPARATION PROCESSES
SORPTION
SULFIDES
SULFUR COMPOUNDS
SURFACE AREA
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
TUNGSTEN OXIDES
TUNGSTEN SULFIDES
X-RAY DIFFRACTION
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES