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U.S. Department of Energy
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Leaching nickel cobalt molybdenum tungsten and vanadium from spent hydroprocessing catalysts

Patent ·
OSTI ID:5356474

A process for removing nickel, cobalt, molybdenum, and vanadium from spent hydroprocessing catalyst particles by roasting the catalyst at between 400/sup 0/ C. and 600/sup 0/ C. and leaching the catalyst particles with an aqueous solution of ammonia and an ammonium salt.

Assignee:
Chevron Research Company
Patent Number(s):
US 4514368
OSTI ID:
5356474
Country of Publication:
United States
Language:
English