Niobium or tantalum promoted silver catalyst

Details Niobium or tantalum promoted silver catalyst Niobium or tantalum promoted silver catalyst

1996-10-25

1998-04-07

Caldarola, Glenn

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502216, 502344, 502353, 549536, B01J 2350, B01J 2320, B01J 2702, C07B30110

Patent

active

057364834

ABSTRACT:
A rhenium free silver catalyst for ethylene oxidation to ethylene oxide is provided containing a promoter combination consisting of an alkali metal component a niobium or tantalum component, and a sulfur component.

REFERENCES:
patent: 3702259 (1972-11-01), Nielsen
patent: 3888889 (1975-06-01), Kolombos et al.
patent: 3962136 (1976-06-01), Nielsen et al.
patent: 4007135 (1977-02-01), Hayden et al.
patent: 4766105 (1988-08-01), Lauritzen
patent: 4908343 (1990-03-01), Bhasin
patent: 5051395 (1991-09-01), Mitchell et al.
patent: 5057481 (1991-10-01), Bhasin
patent: 5504052 (1996-04-01), Rizkalla

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