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Surface studies of WO/sub 3//Al/sub 2/O/sub 3/ and Ni/W/Al/sub 2/O/sub 3/ catalysts

Technical Report ·
OSTI ID:5615236

In the present study x-ray photoelectron spectroscopy, laser Raman spectroscopy and ion scattering spectroscopy were used to investigate the surface structure of supported tungsten catalysts for hydrodesulfurization of sulfur containing petroleum fractions. The properties of WO/sub 3//Al/sub 2/O/sub 3/ catalysts were examined as a function of metal loading, calcination temperature and reduction time. The addition of nickel was also studied to determine its effect on the tungsten species present on the catalyst surface. This study has provided a comprehensive picture of the nature of the tungsten species present in WO/sub 3//Al/sub 2/O/sub 3/ and Ni/W/Al/sub 2/O/sub 3/ catalysts. It has been shown that WO/sub 3//Al/sub 2/O/sub 3/ and MoO/sub 3//Al/sub 2/O/sub 3/ catalysts are very similar structurally. Preliminary results for Ni/W/Al/sub 2/O/sub 3/ catalysts have shown that the promoting action of Ni is different than that of Co in Co/Mo/Al/sub 2/O/sub 3/ catalysts. 31 references, 6 figures, 3 tables.

Research Organization:
Pittsburgh Univ., PA (USA). Dept. of Chemistry
DOE Contract Number:
AC22-80PC30204
OSTI ID:
5615236
Report Number(s):
DOE/PC/30204-T1; ON: DE84000930
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BINDING ENERGY
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
DATA
DESULFURIZATION
ELECTRON SPECTROSCOPY
ELEMENTS
ENERGY
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
HYDROGENATION
INFORMATION
ION SCATTERING ANALYSIS
LASER SPECTROSCOPY
METALS
NICKEL
NONDESTRUCTIVE ANALYSIS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
PHOTOELECTRON SPECTROSCOPY
RAMAN SPECTROSCOPY
REDUCTION
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TUNGSTEN
TUNGSTEN COMPOUNDS
TUNGSTEN OXIDES