Cracking catalyst passivated with a crude antimony phosphorodith

Details Cracking catalyst passivated with a crude antimony phosphorodith Cracking catalyst passivated with a crude antimony phosphorodith

1978-07-25

1979-09-04

Gantz, Delbert E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

208 48AA, 208114, 252417, 252439, 252464, 423617, 260446, C10G 1106, B01J 824, B01J 2121

Patent

active

041668065

ABSTRACT:
A hydrocarbon cracking catalyst is treated with a crude antimony tris-(O,O-dihydrocarbyl phosphorodithioate) to passivate thereon contaminating metals, e.g., vanadium, iron and/or nickel. Used or unused catalyst can be treated.

REFERENCES:
patent: 2129693 (1938-09-01), Houdry
patent: 2921018 (1960-01-01), Helmers et al.
patent: 3506567 (1970-04-01), Barger et al.
patent: 3711422 (1973-01-01), Johnson et al.
patent: 3979472 (1976-09-01), Butter
patent: 4025458 (1977-05-01), McKay
patent: 4031002 (1977-06-01), McKay
patent: 4036740 (1977-07-01), Readal et al.
patent: 4111845 (1978-09-01), McKay

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