Showa Denko K.k.

Showa Denko Kabushiki Kaisha

Agency of Industrial Science and Technology

Ken-ichi Sano

Tetsuo Nakajo

Shinya Matsuhira

Yukimitsu Mita

Hiroshi Uchida

Yoshiaki Obana

Hitoshi Iijima

An acetic acid production catalyst that contains (b) at least one element selected from the group consisting of Group 14 elements, Group 15 elements and Group 16 elements of the Periodic Table and/or (c) at least one element selected from the group consisting of Group 6 elements, Group 7 elements, Group 8 elements, Group 9 elements, Group 10 elements, Group 11 elements and Group 12 elements of the Periodic Table, added to a palladium-loaded catalyst, as well as an acetic acid and ethyl acetate production catalyst that contains (b) at least one compound selected from the group consisting of inorganic acids and salts thereof and/or (c) at least one element selected from the group consisting of Group 14 elements, Group 15 elements and Group 16 elements of the Periodic Table and/or (d) at least one element selected from the group consisting of Group 6 elements, Group 7 elements, Group 8 elements, Group 9 elements, Group 10 elements, Group 11 elements and Group 12 elements of the Periodic Table, added to palladium.

Catalyst for production of acetic acid or acetic acid and ethyl acetate, process for its production and process for production of acetic acid or acetic acid and ethyl acetate using it

Catalyst for production of acetic acid and ethyl acetate, process for its production and process for production of acetic acid and ethyl acetate using it

A catalyst comprising a combination of rhodium, iridium and lithium supported on a carrier having a specific surface area of more than 150 m.sup.2 /g is disclosed for producing two carbon atom oxygenerated compounds from carbon monoxide. The catalyst has high catalytic activity and high selectivity to acetic acid.

Process for producing oxygen-containing hydrocarbon compounds

A rhodium catalyst containing supported rhodium metal omnipresent in the surface layer or in the neighborhood of the surface layer of the particles of a silica or titania type support is presented. This catalyst is prepared by a method (i) in which the support is dipped into an aqueous solution of a water-soluble rhodium salt previously adjusted to pH of at least 10, followed by the drying and reduction, or a method (ii) in which the support is first dipped into an aqueous solution of a water-soluble rhodium salt having a pH of 1 or less and, then, dipped into an aqueous alkaline solution containing an alkaline compound in an amount sufficient to neutralize the acid impregnated in the support and also sufficient to convert the rhodium salt impregnated in the support into rhodium hydroxide, followed by the drying and reduction.

Rhodium catalyst and method for preparing the same

A rhodium catalyst containing supported rhodium metal omnipresent in the surface layer or in the neighborhood of the surface layer of the particles of a silica or titania type support is presented. This catalyst is prepared by a method (i) in which the support is dipped into an aqueous solution of a water-soluble rhodium salt previously adjusted to a pH of at least 10, followed by the drying and reduction, or a method (ii) in which the support is first dipped into an aqueous solution of a water-soluble rhodium salt having a pH of 1 or less and, then, dipped into an aqueous alkaline solution containing an alkaline compound in an amount sufficient to neutralize the acid impregnated in the support and also sufficient to convert the rhodium salt impregnated in the support into rhodium hydroxide, followed by the drying and reduction.

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Kawasaki, Japan

Ken-ichi Sano