Method of preparing a hydroconversion sulfided molybdenum catalyst concentrate

Patent · Tue Apr 26 00:00:00 EDT 1988

OSTI ID:6951024

Bearden, R Jr; Aldridge, C L; Mayer, F X; Taylor, J H; Lewis, W E

In a method for preparing a catalyst wherein aqueous phosphomolybdic acid is heated in the presence of a hydrocarbonaceous oil and a gas selected from the group consisting of a hydrogen-containing gas, a hydrogen sulfide-containing gas and mixtures thereof to convert the phosphomolybdic acid to a solid catalyst, the improvement is described which comprises: (a) forming a mixture of a hydrocarbonaceous oil comprising constituents boiling above about 1050/sup 0/F and the aqueous solution of phosphomolybdic acid in an amount to provide from about 0.2 to 2 weight percent molybdenum, calculated as elemental molybdenum, based on the hydrocarbonaceous oil to produce a water-containing catalyst precursor concentrate; (b) drying the water-containing catalyst precursor concentrate to remove the water and produce a substantially water-free catalyst precursor concentrate; (c) contacting the water-free catalyst precursor concentrate with added hydrogen sulfide at a temperature from about 50/sup 0/ to about 600/sup 0/F and a hydrogen sulfide partial pressure ranging from about 14.7 psia to about 100 psia to produce a sulfided catalyst precursor concentrate; (d) separating the unreacted hydrogen sulfide from the sulfided catalyst precursor concentrate; (e) heating the sulfided catalyst precursor concentrate in the absence of hydrogen sulfide and in the absence of hydrogen, at a temperature of at least about 650/sup 0/F and a total pressure ranging from about 0 to about 100 psig, for a time sufficient to convert the sulfided catalyst precursor to a solid molybdenum-containing catalyst and, thereby, produce a catalyst concentrate.

• Assignee: Exxon Research and Engineering Co., Florham Park, NJ
• Patent Number(s): US 4740489
• Application Number: TRN: 88-025539
• OSTI ID: 6951024
• Resource Relation: Patent File Date: Filed date 22 Dec 1986
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CATALYSTS
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
HYDROGENATION
AQUEOUS SOLUTIONS
DRYING
HEATING
HYDROGEN SULFIDES
MOLYBDENUM
MOLYBDOPHOSPHORIC ACID
PETROLEUM PRODUCTS
SEPARATION PROCESSES
SOLIDIFICATION
SULFIDATION
CHALCOGENIDES
CHEMICAL REACTIONS
DISPERSIONS
ELEMENTS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
METALS
MIXTURES
MOLYBDENUM COMPOUNDS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHOSPHORUS COMPOUNDS
REFRACTORY METAL COMPOUNDS
SOLUTIONS
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
400201* - Chemical & Physicochemical Properties