| abstract |
The invention relates to a process and catalysts for the production of glyoxals. To prepare glyoxals, a dehydrogenation by oxidation of a glycol is carried out at a temperature of 400 to 700 ° C, in the presence of a silver-based catalyst composed of silver and at least one element selected from gold, platinum, rhodium and palladium, and phosphorus or a compound of phosphorus. This process and catalysts make it possible to produce high quality glyoxals with high yield and industrial advantages, while minimizing the contents of unreacted raw material and reaction intermediates, such as glycolaldehyde and l. 'acetol. |