CATALYST FOR PRODUCING ETHYLENE OXIDE Russian patent published in 1994 - IPC

FIELD: petrochemistry. SUBSTANCE: catalyst contains silver (1-25 mass % ), alkali metal (10-3000 ppm), rhenium (0.1-10 mmol/g) and carrier. Mentioned above carrier contains α-oxide of aluminium (preferable is quantity more 90 mass % ), 0.05-6 mass % of alkali-earth metal (preferable is quantity 0.05-5 mass % ), 0.01-5 mass % of silicium dioxide (preferable is quantity 0.05-3 mass % ), 0-10 mass % of zirconium dioxide (preferable is quantity 0.5-2 mass % ). Carrier has pores with volume 0.2-0.6 cm³/g (preferable is volume 0.3-0.5 cm³/g), specific surface of carrier being 0.15-3 m²/g (preferable is surface 0.3-2.0 m²/g). Catalyst contains calcium oxide or magnesium oxide or their mixture as alkali-earth metal, its quantity being 0.05-2 mass % . Catalyst may contain copromoter containing sulfur, or molybdenum, or tungsten, or chromium or their mixture, quantity of copromoter is 0.1-15 μ moles per 1 g of catalyst. EFFECT: improves quality of catalyst. 8 cl, 2 tbl