Surface chemistry of activated hydrodesulfurization catalysts by x-ray photoelectron spectroscopy
Journal Article
·
· J. Catal.; (United States)
The XPS spectra of unsulfided and sulfided catalyst containing 12-30% molybdenum trioxide and 0-6% cobalt oxide on alumina or carbon showed that the cobalt is reduced by sulfiding with hydrogen/hydrogen sulfide at 400/sup 0/C, probably to the zero-valent state; no cobalt sulfide was observed. A bulk cobalt molybdate sample treated under the same sulfiding conditions as the supported catalysts, showed the expected Co/sub 9/S/sub 8/ formation. On alumina supports, part of the cobalt formed CoAl/sub 2/O/sub 4/, in amounts that depended on the temperature of calcining prior to sulfiding; cobalt bound as aluminate was neither sulfided nor reduced. The differences between the supported and unsupported catalysts are attributed to the dispersion.
- Research Organization:
- Am. Cyanamid Co.
- OSTI ID:
- 5272926
- Journal Information:
- J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 340:1; ISSN JCTLA
- Country of Publication:
- United States
- Language:
- English
Similar Records
ESR and XPS (X-ray photoelectron spectroscopy) investigation of a Mo-(eta)Al/sub 2/O/sub 3/ model catalyst system and its interaction with adsorbed aromatics
Infrared study of sulfided Co-Mo/Al/sub 2/O/sub 3/ catalysts: the nature of surface hydroxyl groups
Studies on molybdena-alumina catalysts--8. Effect of cobalt on catalyst sulfiding
Journal Article
·
Thu May 01 00:00:00 EDT 1980
· J. Phys. Chem.; (United States)
·
OSTI ID:6463800
Infrared study of sulfided Co-Mo/Al/sub 2/O/sub 3/ catalysts: the nature of surface hydroxyl groups
Journal Article
·
Tue Jul 01 00:00:00 EDT 1980
· J. Catal.; (United States)
·
OSTI ID:6200647
Studies on molybdena-alumina catalysts--8. Effect of cobalt on catalyst sulfiding
Conference
·
Mon Dec 31 23:00:00 EST 1979
· J. Catal.; (United States)
·
OSTI ID:6313729
Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CALCINATION
CARBON
CATALYST SUPPORTS
CATALYSTS
CHALCOGENIDES
CHEMICAL ACTIVATION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COBALT COMPOUNDS
COBALT OXIDES
COBALT SULFIDES
DECOMPOSITION
DESULFURIZATION
ELECTRON SPECTROSCOPY
ELEMENTS
HIGH TEMPERATURE
HYDROGENATION
KINETICS
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
MOLYBDENUM SULFIDES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PYROLYSIS
REACTION KINETICS
SPECTROSCOPY
SULFIDATION
SULFIDES
SULFUR COMPOUNDS
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
X-RAY SPECTROSCOPY
400201 -- Chemical & Physicochemical Properties
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CALCINATION
CARBON
CATALYST SUPPORTS
CATALYSTS
CHALCOGENIDES
CHEMICAL ACTIVATION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COBALT COMPOUNDS
COBALT OXIDES
COBALT SULFIDES
DECOMPOSITION
DESULFURIZATION
ELECTRON SPECTROSCOPY
ELEMENTS
HIGH TEMPERATURE
HYDROGENATION
KINETICS
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
MOLYBDENUM SULFIDES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PYROLYSIS
REACTION KINETICS
SPECTROSCOPY
SULFIDATION
SULFIDES
SULFUR COMPOUNDS
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
X-RAY SPECTROSCOPY