Hydrocracking with aqueous phosphomolybdic acid

Patent · Tue Jan 20 04:00:00 EST 1987

OSTI ID:6808610

Bearden, R Jr; Aldridge, C L

This patent describes a method for preparing a catalyst wherein aqueous phosphomolybdic acid is heated in the presence of a hydrocarbonaceous material 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 described here comprises: (a) forming a mixture of a first hydrocarbonaceous material comprising at least about 10 weight percent constituents boiling above about 1050/sup 0/F. and the aqueous solution of phosphomolybdic acid in an amount to provide in the mixture from about 0.2 to 2 weight percent molybdenum, calculated as elemental metal, based on the first hydrocarbonaceous material. The aqueous solution comprises from about 3 to about 5 weight percent molybdenum derived from the phosphomolybdic acid to produce a catalyst precursor concentrate; (b) introducing at least a portion of the catalyst precursor concentrate into a second hydrocarbonaceous material having a different boiling point range from the first hydrocarbonaceous material; (c) heating the mixture resulting from step (a) or the mixture resulting from step (b) in the presence of a gas selected from the group consisting of hydrogen-containing gas, hydrogen sulfide-containing gas, and mixtures thereof at conditions to convert the phosphomolybdic acid to a solid molybdenum-containing catalyst.

• Assignee: Exxon Research and Engineering Co., Florham Park, NJ
• Patent Number(s): US 4637871
• OSTI ID: 6808610
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
AQUEOUS SOLUTIONS
BOILING POINTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DISPERSIONS
ELEMENTS
HEATING
HIGH TEMPERATURE
HYDROCARBONS
HYDROCRACKING
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INORGANIC ACIDS
METALS
MIXTURES
MOLYBDENUM
MOLYBDENUM COMPOUNDS
MOLYBDIC ACID
NONMETALS
ORGANIC COMPOUNDS
PHOSPHORIC ACID
PHYSICAL PROPERTIES
PYROLYSIS
QUANTITY RATIO
REFRACTORY METAL COMPOUNDS
SOLUTIONS
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TRANSITION TEMPERATURE