Hydrocracking with phosphomolybdic acid and phosphoric acid

Patent · Tue Jan 20 04:00:00 EST 1987

OSTI ID:6822020

Bearden, R Jr; Aldridge, C L

A process is described for hydroconverting a heavy hydrocarbonaceous oil chargestock comprising a catalyst to produce lower boiling hydrocarbon products. It comprises reacting the chargestock with hydrogen at hydroconversion conditions, including a temperature ranging from about 800 to about 900/sup 0/F., the catalyst having been prepared by the steps which comprise: (a) adding phosphoric acid to an aqueous solution of phosphomolybdic acid in an amount to provide in the solution an atomic ratio of phosphorus to molybdenum ranging from 0.12:1 to 0.45:1; and, subsequently (b) forming a mixture of a hydrocarbonaceous material having a different boiling point range from the chargestock and the aqueous solution resulting from step (a), in an amount to provide in the mixture from about 0.2 to 2 weight percent molybdenum, calculated as elemental metal, based on the hydrocarbonaceous material to produce a catalyst precursor concentrate; (c) introducing at least a portion of the catalyst precursor concentrate into the chargestock; and (d) heating the mixture resulting from step (b), or the mixture resulting from step (c) in the presence of a gas selected from the group consisting of a hydrogen-containing gas, a hydrogen sulfide-containing gas and mixtures thereof at conditions to convert the phosphomolybdic acid and the phosphoric acid to a solid molybdenum and phosphorus-containing catalyst.

• Assignee: Exxon Research and Engineering Co., Florham Park, NJ
• Patent Number(s): US 4637870
• OSTI ID: 6822020
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
AQUEOUS SOLUTIONS
BOILING POINTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DISPERSIONS
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HEATING
HIGH TEMPERATURE
HYDROCRACKING
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INORGANIC ACIDS
METALS
MIXTURES
MOLYBDENUM
MOLYBDENUM COMPOUNDS
MOLYBDIC ACID
NONMETALS
PETROLEUM
PHOSPHORIC ACID
PHOSPHORUS
PHYSICAL PROPERTIES
PYROLYSIS
QUANTITY RATIO
REFRACTORY METAL COMPOUNDS
SOLUTIONS
SULFIDES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TRANSITION TEMPERATURE
VISCOSITY