GLYOXAL PRODUCTION CATALYST Russian patent published in 2006 - IPC B01J23/50 B01J23/72 B01J27/14 C07C47/127 

FIELD: industrial organic synthesis catalysts.

SUBSTANCE: invention provides catalyst for production of glyoxal via catalytic oxidation of ethylene glycol, wherein lower catalyst bed is composed of crystalline copper, upper bed of fibrous silver granules, and the two beds are modified with phosphorus. Crystalline copper particles are 1 to 100 μm in pore size and 5 to 50 μm in wall thickness. Fibrous silver granules are 0.01 to 3.00 mm in size with their specific surface being between 0.10 and 0,17 m²/g. Surface concentration of phosphorus is between 0.1 and 6% for lower bed and between 0.05 and 3.00% for upper one.

EFFECT: increased conversion and selectivity of ethylene glycol oxidation process and simplified catalyst bed formation.

4 cl, 4 ex