OLEFIN OXIDE CATALYST SUPPORT Russian patent published in 2012 - IPC B01J23/58 B01J23/50 B01J35/10 C07D301/04 

FIELD: chemistry.

SUBSTANCE: invention relates to catalyst supports used for epoxidation. Described is an olefin epoxidation catalyst support, wherein said support has pore volume from pores with diameter smaller than 1 mcm of less than 0.20 ml/g and pore volume from pores with diameter greater than 5 mcm of less than 0.2 ml/l, wherein at least 40% of the pore volume consists of pores having diameter from 1 mcm to 5 mcm. Described is an olefin epoxidation catalyst support, having a support and a catalytically effective amount of silver on it, wherein said support has pore volume from pores with diameter smaller than 1 mcm of less than 0.20 ml/g and pore volume from pores with diameter greater than 5 mcm of less than 0.2 ml/l, wherein at least 40% of the pore volume consists of pores having diameter from 1 mcm to 5 mcm. Described is an olefin epoxidation catalyst which has a support and a catalytically effective amount of silver on it, wherein said support has total pore volume of 0.2-0.6 ml/g, surface area from about 0.3 m²/g to about 3 m²/g, at least 40% of the pore volume from pores with diameter ranging from 1 mcm to 5 mcm and average pore diameter from 1 mcm to 5 mcm, an in which pore volume from pores with diameter greater than 5 mcm is less than 0.20 ml/g, and pore volume from pores with diameter smaller than 1 mcm is less than 0.20 ml/g. Described is a method of oxidising ethylene to ethylene oxide, which involves vapour-phase oxidation of ethylene with molecular oxygen in a fixed bet, in a tubular reactor in the presence of the catalyst described above.

EFFECT: high activity, selectivity and stability of the epoxidation catalyst.

19 cl, 4 tbl, 3 ex