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AssigneeNippon Shokubai Co., Ltd.
InventorsYusei Nagamura, Yuuichi Satoh, Jun Tatsumi, Kunihiro Yamamura
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In a producing method of alcohols such as cyclohexanedimethanol, a benzyl ester is obtained, for example, by the reaction between a benzyl compound and carboxylic acid in the presence of oxygen and a catalyst including palladium, gold ultra fine particles, and at least one kind of element selected from the group consisting of Group IIA, IIIA, VIA, IIB, VB, and VIII of the periodic table, and alkali metal. The alcohols are produced by hydrogenating a benzene ring of the benzyl ester and then hydrolyzing the resultant esters. Alternatively, the benzyl ester is hydrolyzed to produce benzyl alcohols, and a benzene ring of the benzyl alcohols is hydrogenated to produce the alcohols.
A method of producing a benzyl ester comprising reacting a benzyl compound and a carboxylic acid by using a catalyst in which ultrafine particles including gold have been immobilized on an inorganic oxide including at least one element selected from titanium, zirconium, and aluminum in the presence of oxygen, the particle diameter of the ultrafine particles being 5 to 10 nm, the inorganic oxide having a specific surface area of not less than 50 m2/g.
Dependencies are inferred from the claim text.