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U.S. Department of Energy
Office of Scientific and Technical Information

Vanadium passivation in a hydrocarbon catalytic cracking process

Patent ·
OSTI ID:5846616
A catalyst composition is described comprising a crystalline alumino-silicate zeolite, a matrix material, and from 5 to 40 weight percent, based on the total catalyst, of a calcium-containing, substantially water-insoluble, additive which will not neutralize the acidic sites of the catalyst. The additive comprises substantially amorphous calcium silicate. The calcium-containing additive is a separate and discrete component of the catalyst composition.
Assignee:
Chevron Research Co., San Francisco, CA
Patent Number(s):
US 4707461
OSTI ID:
5846616
Country of Publication:
United States
Language:
English