Mitsubishi Petrochemical Company Limited

Yukio Sakai

Naohiro Nojiri

Tomoatsu Iwakura

Yoshiaki Saotome

Akimi Ayame

A silver-deposited catalyst for the production of ethylene oxide by the oxidation of ethylene, said catalyst comprising

Silver-deposited catalyst for production of ethylene oxide

A silver-deposited catalyst for production of ethylene oxide by oxidizing ethylene, having high selectivity and long life, is provided by this invention. The catalyst is characterized by a combination of (a) catalyst ingredients comprising silver and a cation component selected at least from sodium, potassium, rubidium and cesium, and (b) a carrier composed mainly of alpha-alumina, said carrier having a surface area of 0.6 to 2 m.sup.2 /g, a water absorption of 20 to 50%, a silica content of 0.5 to 12% by weight, a silica content, per m.sup.2 /g of surface area, of 0.5 to 12, preferably 1 to 8, and a sodium content of 0.08 to 2% by weight.

A catalyst for the production of ethylene oxide from ethylene, said catalyst comprising a porous carrier composed of a molded article of a refractory material and at least silver grains deposited on the carrier, wherein

Silver catalyst for production of ethylene oxide from ethylene

A process for producing silver oxalate, which comprises reacting

Process for producing silver oxalate

Silver catalyst for production of ethylene oxide from ethylene and

A packing material for a reactor for producing ethylene oxide by the catalytic oxidation of ethylene in the presence of molecular oxygen, wherein the packing material is used at the inlet side of a catalyst layer of the reactor, is silica-alumina containing 10 to 8 wt. % of silica, and is produced by sintering the silica-alumina at 1200.degree. to 1500.degree. C.

Method for producing ethylene oxide

A catalyst comprises sodium and cesium as a cationic component and chlorine as an anionic component in addition to silver which is a typical conventional catalyst component for the production of ethylene oxide by oxidation of ethylene. Use of the catalyst of the invention gives ethylene oxide at an improved selectivity.

Silver-based catalyst containing chlorine as an anionic component for

A catalyst comprising sodium and cesium as a cationic component and at least one of bromine and fluorine as an anionic component in addition to silver which is a typical conventional catalyst component for the production of ethylene oxide by oxidation of ethylene. Use of the catalyst of the invention gives ethylene oxide at an improved selectivity.

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Ami, Japan

Yukio Sakai