04824821 is referenced by 74 patents and cites 6 patents.

A process for the preparation of a dispersed Group VIB metal sulfide catalyst which is promoted with a Group VIII metal for use in hydrocarbon oil hydroprocessing comprising dissolving a Group VIB metal compound, such as molybdenum oxide or tungsten oxide, with ammonia to form a water soluble compound such as aqueous ammonium molybdate or ammonium tungstate. The aqueous ammonium molybdate or ammonium tungstate is sulfided in a plurality of sulfiding steps at increasing temperatures. A compound containing a Group VIII metal is added to any sulfiding step in preference to the Group VIB metal dissolving step. The catalyst slurry and feed oil can then be passed to a hydroprocessing reactor.

Title
Dispersed group VIB metal sulfide catalyst promoted with Group VIII metal
Application Number
527414
Publication Number
4824821
Application Date
August 21, 1985
Publication Date
April 25, 1989
Inventor
Eugene A Pasek
Export
PA, US
Jaime Lopez
Benicia
CA, US
Agent
Q Todd Dickinson
S R La Paglia
Assignee
Chevron Research Company
CA, US
IPC
B01J 27/051
B01J 27/047
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