Production of improved molybdenum disulfide catalysts

Patent · Tue Jan 06 04:00:00 EST 1981

OSTI ID:6467687

Behan, A S; Naumann, A W

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
• Country of Publication: United States
• Language: English

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CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
HYDROGENATION
METHANATION
MOLYBDENUM COMPOUNDS
MOLYBDENUM SULFIDES
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
WATER GAS PROCESSES