Production of improved molybdenum disulfide catalysts
High surface area molybdenum disulfide, MoS/sub 2/, is produced by the thermal decomposition of selected substituted ammonium thiomolybdate salts at temperatures of about 300*-800* C., with said salts being heated to decomposition temperature slowly, in an essentially oxygen-free atmosphere, through the temperature interval in which the substantial portion of the particular substituted ammonium thiomolybdate salts decompose. The product molybdenum disulfide has superior catalytic properties for the water gas shift and methanation reactions compared with conventional MoS/sub 2/. The stability of the catalyst is enhanced by decomposing the thiomolybdate salt in admixture with an inert, preformed particulate diluent or by bulk doping said salt with tungsten or vanadium prior to decomposition of the salt. The molybdenum disulfide of the invention also has desirable properties for use in catalyzed hydrogenation and hydrotreating reactions, i.e., hydrodenitrogenation and hydrodesulfurization reactions, particularly when employed in nickel or cobaltpromoted form.
- Assignee:
- Union Carbide Corp
- Patent Number(s):
- US 4243553
- OSTI ID:
- 6467687
- Resource Relation:
- Patent File Date: Filed date 11 Jun 1979
- Country of Publication:
- United States
- Language:
- English
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Supported carbon-containing molybdenum and tung sten sulfide catalysts, their preparation and use
Supported carbon-containing molybdenum and tungsten sulfide catalysts, their preparation and use
Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
10 SYNTHETIC FUELS
02 PETROLEUM
HYDROGENATION
CATALYSTS
METHANATION
MOLYBDENUM SULFIDES
CATALYTIC EFFECTS
CHEMICAL PREPARATION
WATER GAS PROCESSES
CHALCOGENIDES
CHEMICAL REACTIONS
MOLYBDENUM COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
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