Showa Denko K.k.

Resonac Corporation

Wataru Oguchi

Hiroshi Uchida

Etsuko Kadowaki

Toshihiro Kimura

Tetsuo Nakajo

Katsuyuki Tsuji

Takashi Tatsumi

Tomoyoshi Higashi

Peng Wu

Yoshiaki Obana

Kenichi Abe

Takashige Miyanari

Yukiharu Hetsugi

Yasuhiro Iwama

Hiroshi Maruta

Katsuhiko Yamashita

Masafumi Koyano

Takuya Kuzutani

Gen Inoue

Daiki Shimono

Kenji Yamada

Makoto Nishi

A method and catalyst for producing an alcohol, which method includes supplying water and a C2-C5 olefin to a reactor and performing hydration in a gas phase using a solid acid catalyst. The solid acid catalyst is one in which a heteropolyacid or a salt thereof is supported on a silica carrier. The silica carrier is obtained by kneading a fumed silica obtained by a combustion method, a silica gel obtained by a gel method, and a colloidal silica obtained by a sol-gel method or a water glass method; molding the resulting kneaded product; and calcining the resulting molded body.

Method for producing alcohol and catalyst for producing alcohol

A method for producing the silica carrier which includes kneading fumed silica obtained by a combustion method, silica gel obtained by a gel method, and colloidal silica obtained by a sol-gel method or a water glass method, molding the resulting kneaded product, and calcining the resulting molded body. The silica carrier has, in the measurement of pore size distribution, mesopores with a pore size of 2 to 50 nm and macropores with a pore size of more than 50 nm and 1,000 nm or less.

Method for producing silica carrier, and silica carrier

Provided is a method for producing n-propyl acetate, which is capable of obtaining high-purity allyl acetate with a low amount of coexisting water and is capable of producing n-propyl acetate with a high yield. The method includes an extraction process of subjecting a raw material liquid containing allyl acetate and water to an extraction operation using water as an extraction solvent and separating the extract into an oily phase and an aqueous phase, a distillation process of distilling the oily phase to obtain a distillate containing allyl acetate as a main component, and a hydrogenation process of subjecting the distillate to a hydrogenation reaction.

Method for producing n-propyl acetate and method for producing allyl acetate

A process for production of allyl acetate includes steps of reacting acetic acid, oxygenand propylenein the presence of a catalyst in an oxidation reactorto form allyl acetate and water; separating the unreacted acetic acid by a distillation column; and recovering an acetic acid-containing liquid which contains acetic acid and returning the acetic acid-containing liquid to the oxidation reactorvia an acetic acid-water evaporator, the process further including a heating step of heating a process liquid which contains the acetic acid-containing liquid to a temperature of 80 to 250&#xb0; C. by a heater.

Process for production of allyl acetate

An allyl acetate production catalyst comprising at least (a) palladium, (b) gold, (c) a compound containing at least one element selected from copper, nickel, zinc and cobalt, (d) an alkali metal salt compound and (e) a carrier, is produced by a process comprising step 1 in which a homogeneous solution of a palladium-containing compound and a gold-containing compound is supported on a carrier by contact therewith, step 2 in which the carrier obtained in step 1 is contacted with an alkali solution for impregnation, step 3 in which the carrier obtained in step 2 is subjected to reduction treatment, and step 4 in which a compound containing at least one element selected from copper, nickel, zinc and cobalt and an alkali metal salt compound are supported onto the carrier obtained in step 3. The obtained allyl acetate production catalyst has minimal reduction in activity and improved selectivity, when used for production of allyl acetate from propylene, oxygen and acetic acid.

Process for production of allyl acetate production catalyst

A method of oxidizing a carbon-carbon double bond wherein the compound having the carbon-carbon double bond is suppressed, the unreacted compound is separated from the reaction product, and thereafter the thus obtained unreacted compound is again used for the oxidizing reaction; and a process for producing an oxidized compound utilizing such an oxidizing method. When this method is used, an intended oxidized compound can be obtained with high selectivity and high productivity.

Process for oxidizing carbon-carbon double bond and process for producing oxidized compounds

A process for producing an ester comprising reacting a carboxylic acid and ethylene in the presence of an acid catalyst in a vapor phase, wherein the concentration of olefin having 3 or more carbon atoms in the starting materials is controlled to 10,000 ppm or less in terms of the molar ratio to the total of the olefin and ethylene. The deterioration of the catalyst can be remarkably prevented from proceeding and a continuous and stable operation can be performed for a long time.

Process for producing esters

A crystalline titanosilicate catalyst which is usable as a catalyst in the oxidation reaction of a compound having a carbon-carbon double bond and at least one other functional group, a process for producing the catalyst, and a process for producing an oxidized compound by an oxidation reaction using the catalyst. It has been found that a crystalline titanosilicate having a structural code of MWW effectively functions as a catalyst in an oxidation reaction of a compound having a carbon-carbon double bond and at least one other functional group wherein the carbon-carbon double bond of the compound is oxidized by using a peroxide as an oxidizing agent, thereby to highly selectively provide an intended oxidized compound.

Crystalline MWW-type titanosilicate catalyst for producing oxidized compound, production process for the catalyst, and process for producing oxidized compound by using the catalyst

A catalyst for use in producing acetic acid, comprising as essential components (a) palladium and (b) at least one compound selected from heteropolyacids and/or salts thereof, wherein (c) a vanadium element and/or molybdenum element is contained in a specific proportion. Acetic acid is produced from ethylene and oxygen by a gas phase single-stage reaction using the catalyst.

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Oita, Japan

Wataru Oguchi