Kao Corporation

Taku Mimura

Yasuyuki Hattori

Noriaki Fukuoka

Kiyoshi Tsukada

Nobuyoshi Suzuki

Masazumi Tamura

Osamu Tabata

Yohei Yoshikawa

Masakatsu Takahashi

Jun Kaita

Junji Koshino

Takashi Aoki

Hiroshi Danjo

Shinji Kotachi

Takanobu Katayama

Nobuhiro Tatsumi

Toru Sakamoto

Futoshi Nishigaki

Hidetoshi Kadowaki

Katsutoshi Yamamoto

Kazuyuki Harima

The present invention provides the method for preparing a catalyst including the following steps 1 and 2, and the method for producing an alcohol including preparing a catalyst by the method and subjecting a carboxylic acid or a carboxylic acid ester to catalytic reduction with hydrogen in the presence of the prepared catalyst:

Method for preparing catalyst

The present invention relates to a process for producing hydrogenolysis products of polyhydric alcohols with a good selectivity and a high yield, as well as hydrogenolysis catalysts used in the production process. The present invention provides (1) a process for producing a hydrogenolysis product of a polyhydric alcohol which includes the step of reacting the polyhydric alcohol with hydrogen in the presence of a catalyst containing a copper component, wherein the catalyst is a catalyst (A) containing the copper component, an iron component and an aluminum component, or a catalyst (B) containing the copper component and a silicon component; and (2) a hydrogenolysis catalyst for polyhydric alcohols which includes a copper component, an iron component and an aluminum component, and (3) a hydrogenolysis catalyst for polyhydric alcohols which includes a copper component and a silicon component.

Process for producing hydrogenolysis products of polyhydric alcohols

The present invention provides a catalyst for producing alcohols from carboxylic acids by hydrogenation, containing Co metal as an essential component and one or more elements selected from Zr, Y, La, Ce, Si, Al, Sc, V and Mo as a first co-catalyst component, and having 20% or more of cubic phase in the crystal phase of the Co metal, the method for producing the catalyst, and the method for producing an alcohol from a carboxylic acid as a raw material by hydrogenation using the catalyst.

Catalyst for producing alcohol

The present invention relates to a process for producing a hydrogenolysis product of a polyhydric alcohol in the presence of a catalyst in which a conversion rate of the polyhydric alcohol as well as a selectivity to the hydrogenolysis product, in particular, a selectivity of glycerol to propanediols, can be enhanced. The process for producing a hydrogenolysis product of a polyhydric alcohol according to the present invention includes the step of subjecting a polyhydric alcohol solution having a water content of less than 10% by mass to hydrogenolysis by a fixed-bed continuous liquid phase reaction method in the presence of a hydrogenolysis catalyst.

Method for producing hydrogenolysis product of polyhydric alcohol

The present invention relates to a method of producing a fatty acid ester, including treating a starting fatty acid ester with an adsorbent to adsorb sulfur contained in the starting fatty acid ester, the adsorbent containing at least one metal selected from Ni and Cu in an amount of 10 to 85 percent by weight as a metal oxide(s) thereof per all the adsorbent, having a pore volume having a pore diameter range from 20 to 200 nm within 0.15 to 1.0 mL/g and then a method of producing an alcohol, including hydrogenating a fatty acid ester obtained by the above shown method of producing a fatty acid ester.

Method of producing fatty acid ester

The present invention provides a process for producing lower alkyl fatty esters from fatty acids and lower alcohols, wherein lower alkyl fatty esters are produced in higher yield with a reduction in the amount of the remaining fatty acids. The process of the present invention comprises bringing fatty acids into contact with gaseous lower alcohols in fixed bed(s) charged with a weakly acidic solid catalyst by countercurrent operation, by co-current operation and subsequent countercurrent operation or by pseudo-countercurrent operation, thus feeding and reacting the fatty acids and lower alcohols in fixed-bed reactor(s) charged with a weakly acidic solid catalyst to produce lower alkyl fatty esters.

Process for producing lower alkyl fatty esters

The present invention provides a process for producing hydroxycarboxylic acid esters easily, further at a high reaction selectivity, by using an inexpensive catalyst. That is, the present invention provides a process for producing hydroxycarboxylic acid esters, which comprises hydrogenating dicarboxylic acid diesters having 3 to 20 carbon atoms in the dicarboxylic acid moiety in the presence of a copper catalyst comprising 1 to 40% by weight of copper as copper oxides.

Process for producing hydroxycarboxylic acid ester

The present invention provides a heterogeneous catalyst which is highly active, excellent in selectivity and free from elution of its catalyst-components during reaction and which has long lifetime. That is, a phosphate of a metal selected from the group consisting of aluminum, gallium and iron is used as the catalyst for transesterification of the present invention.

Catalyst for transesterification

Solid acid catalyst

Method for preparing copper-containing hydrogenation reaction catalyst

A copper-containing hydrogenation reaction catalyst is prepared by reducing a precursor of a copper-containing catalyst usable in hydrogenation reaction with hydrogen gas or a mixture of hydrogen and an inert gas by liquid phase reduction in a stream of a solvent in the temperature range of from 50.degree. to 140.degree. C. An alcohol is produced using the catalyst thus obtained in a fixed bed continuous reaction system.

Growing community of inventors

Wakayama, Japan

Taku Mimura