Passivation of metal contaminants on cracking catalyst

Details Passivation of metal contaminants on cracking catalyst Passivation of metal contaminants on cracking catalyst

1983-03-03

1984-05-08

Konopka, P. E.

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

208 52CT, 208120, 502 34, 502 50, 502521, B01J 2938, C10G 1118, C10G 1105

Patent

active

044475527

ABSTRACT:
A contaminating metal on a cracking catalyst used for the cracking of hydrocarbons is passivated by contacting the catalyst with a hydrocarbon gas or mixture of gases comprising molecules of three carbon atoms or less at passivation reaction conditions prior to the cycling of the catalyst to the cracking zone. The cracking catalyst comprises crystalline aluminosilicate contained in a substantially alumina-free inorganic oxide matrix.

REFERENCES:
patent: 3437604 (1969-04-01), Michalko
patent: 3503873 (1970-03-01), Michalko
patent: 3503874 (1970-03-01), Michalko
patent: 4276150 (1981-06-01), McHenry
patent: 4298459 (1981-11-01), Tatterson et al.
patent: 4340465 (1982-07-01), Miller et al.
patent: 4361496 (1982-11-01), Castillo et al.
patent: 4364848 (1982-12-01), Castillo et al.
patent: 4382015 (1983-05-01), Castillo et al.

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