Passivation of metals on cracking catalyst with thallium

Details Passivation of metals on cracking catalyst with thallium Passivation of metals on cracking catalyst with thallium

1978-10-06

1980-12-09

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252411R, 252440, 208120, B01J 2904, B01J 2308

Patent

active

042383676

ABSTRACT:
A hydrocarbon cracking catalyst is treated with thallium to passivate thereon contaminating metals, e.g., vanadium, iron and/or nickel. Used or unused catalysts can be treated.

REFERENCES:
patent: 2172542 (1939-09-01), Morrell
patent: 2901419 (1959-08-01), Brill
patent: 3157688 (1964-11-01), Arnold, Jr. et al.
patent: 3647682 (1972-03-01), Rabo et al.
patent: 4025458 (1977-05-01), McKay
patent: 4031002 (1977-06-01), McKay
patent: 4067823 (1978-01-01), White et al.

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