Vapor phase oxidation of propylene to propylene oxide

Details Vapor phase oxidation of propylene to propylene oxide Vapor phase oxidation of propylene to propylene oxide

1996-01-31

1997-04-29

Evans, Joseph E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

502347, C07D30110, C07D30304

Patent

active

056250843

ABSTRACT:
Propylene is converted to propylene oxide in a vapor phase oxidation process employing a silver catalyst supported on an alkaline earth metal carbonate and containing both a potassium salt such as potassium nitrate and a molybdenum promoter. The potassium salt and the molybdenum promoter may be simultaneously supplied by the use of a potassium salt of a molybdenum oxyanion. The efficiency of the process is greatly enhanced through the simultaneous inclusion of carbon dioxide and an organic halide in the feedstream. The feedstream need not contain a nitrogen oxide species such as NO to attain high propylene oxide selectivity.

REFERENCES:
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patent: 3560530 (1971-02-01), Stiles
patent: 3962285 (1976-06-01), Cusumano
patent: 4808738 (1989-02-01), Lauritzen
patent: 4820675 (1989-04-01), Lauritzen
patent: 5364826 (1994-11-01), Kemp
patent: 5387751 (1995-02-01), Hayden et al.
patent: 5486628 (1996-01-01), Kemp

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