Process for the production of glyoxals and catalysts therefor

Details Process for the production of glyoxals and catalysts therefor Process for the production of glyoxals and catalysts therefor

1995-05-18

1997-11-18

Barts, Samuel

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

Organic compounds

Oxygen containing

568404, C07C 4500

Patent

active

056890117

ABSTRACT:
The present invention provides a process for the production of glyoxals which comprises effecting the oxidative dehydrogenation of a glycol at a temperature of 400.degree. to 700.degree. C. in the presence of a silver-based catalyst composed of silver and at least one element selected from the group consisting of gold, platinum, rhodium and palladium, and phosphorus or a phosphorus compound, as well as such catalysts. These process and catalysts make it possible to produce high-quality glyoxals in high yield and with industrial advantages while minimizing the contents of unreacted raw material and reaction intermediates such as glycolaldehyde and acetol.

REFERENCES:
patent: 3948997 (1976-04-01), Howe et al.
patent: 4503261 (1985-03-01), Sauer et al.

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