Ethylene oxide catalyst

Details Ethylene oxide catalyst Ethylene oxide catalyst

1991-12-09

1992-09-08

Shine, W. J.

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

Catalyst or precursor therefor

Sulfur or compound containing same

502242, 502243, 502347, 502348, 549536, B01J 2104, B01J 2304, B01J 2336, B01J 2350

Patent

active

051458241

ABSTRACT:
The invention relates to ethylene oxide catalysts containing silver, alkali metal promoters, rhenium promoters and optionally rhenium co-promoters selected from sulfur, molybdenum, tungsten, chromium and mixtures thereof supported on a carrier consisting of at least 85 percent by weight of alpha alumina, from about 0.01 to about 6 percent by weight (measured as the oxide) of an added alkaline earth metal in the form of an oxide, from about 0.01 to about 5 percent by weight (measured as the dioxide) of added silicon in the form of an oxide and from zero to about 10 percent by weight (measured as the dioxide) of added zirconium in the form of an oxide. The invention also relates to an ethylene oxide process using the above catalyst.

REFERENCES:
patent: 4428863 (1984-01-01), Fry
patent: 4728634 (1988-03-01), Buffum et al.
patent: 4761394 (1988-08-01), Lauritzen
patent: 4766105 (1988-08-01), Lauritzen
patent: 4812437 (1989-03-01), Nojiri et al.
patent: 4820675 (1989-04-01), Lauritzen
patent: 4874739 (1989-10-01), Boxhoorn

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