Mitsubishi Chemical Corporation

Katsumi Nakashiro

Tomoatsu Iwakura

Takanao Matsumoto

Soichiro Yamada

Takako Imamoto

There is provided a catalyst for producing ethylene oxide from ethylene which is composed of at least silver (Ag), cesium (Cs), rhenium (Re) and a carrier, and can be improved, in particular, in selectivity. The present invention relates to a catalyst for producing ethylene oxide from ethylene, comprising at least silver (Ag), cesium (Cs), rhenium (Re) and a carrier, said catalyst being produced by optionally pretreating the carrier to support an alkali metal thereon and then supporting Ag, Cs and Re on the carrier, wherein the carrier has a specific surface area of 0.6 to 3.0 m/g and a weight ratio of a silicon (Si) content to a sodium (Na) content of 2 to 50 in terms of SiO/NaO; a content of Re in the catalyst is 170 to 600 ppm per 1 m/g of the specific surface area of the carrier on the basis of a weight of the carrier; and a molar ratio of Cs to Re in the catalyst is 0.3 to 19.

Catalyst for producing ethylene oxide, process for producing the catalyst and process for producing ethylene oxide

An olefin oxidation catalyst comprising a carrier, and silver and an alkali metal supported thereon, wherein the content of organic substances is less than 0.1 wt %.

Olefin oxidation catalyst and process for its production

A catalyst for oxidizing ethylene and producing ethylene oxide, said catalyst being prepared by pretreating a porous carrier with a solution containing a lithium compound and a cesium compound, thereafter, impregnating a solution containing a silver compound and a cesium compound in the pretreated porous carrier and then heat-treating the impregnated porous carrier. The use of the catalyst of this invention provides high selectivity in the production of ethylene oxide by the vapor contact oxidation of ethylene.

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Yokkaichi, Japan

Katsumi Nakashiro