Tokyo Institute of Technology

Japan Science and Technology Agency

Nippon Oil Corporation

Ajinomoto Co., Ltd.

Kabushiki Kaisha Toshiba

Nippon Oil Company

Institute of Science Tokyo

Michikazu Hara

Hideo Hosono

Toshiharu Yokoyama

Masaaki Kitano

Kazunari Domen

Yoshitake Toda

Fumitaka Hayashi

Yasunori Inoue

Hidesato Kondo

Hiroyuki Kojima

Satoru Matsuishi

Kazuteru Yamada

Hiromi Noguchi

Mitsuhiro Kishino

Toru Numaguchi

Munenobu Ito

Shinichirou Yanagawa

Tsuyoshi Takata

Shinichiro Yanagawa

Norio Takami

Takahisa Ohsaki

Akira Matsuo

Akio Ishikawa

Shigenori Mitsushima

Asako Satoh

Kenichiro Ota

Akimitsu Ishihara

Hiroshi Mizoguchi

Nobuyuki Kamiya

Sung Wng Kim

Junko Nomura

Takahiro Ishikawa

Kiyotaka Nakajima

Kazunari Doumen

Daiki Takeda

Kota Nukimizu

Go Hitoki

Shinji Kambara

Takeshi Kadono

Kyosuke Yamagata

Shigenori Mittsushima

Kota Nukumizu

Provided is a novel production system that does not involve, or can minimize, the transport of liquid ammonia in the production of an organic compound or the production of a microorganism by microbial fermentation. A production system for an organic compound or a microorganism includes: an ammonia synthesis apparatus in which an ammonia-containing gas is synthesized by reaction of a source gas containing hydrogen and nitrogen in the presence of a supported ruthenium catalyst; and a culture apparatus that cultures a microorganism having organic compound productivity using ammonia originating from the ammonia-containing gas obtained by using the ammonia synthesis apparatus.

Production system and method of production for organic compound or microorganism

A production system for a product selected from a nitrogen-containing product and a fermented and cultured product that does not involve (or can minimize) the transport of liquid ammonia can include: an ammonia synthesis apparatus in which an ammonia-containing gas is synthesized by reaction of a source gas containing hydrogen and nitrogen in the presence of a supported metal catalyst containing as a support one or more selected from the group consisting of: i) a conductive mayenite compound; ii) a two-dimensional electride compound or a precursor thereof; and iii) a complex formed of a support base containing at least one metal oxide selected from ZrO, TiO, CeO, and MgO and a metal amide represented by a formula M(NH)(where M represents one or more selected from Li, Na, K, Be, Mg, Ca, Sr, Ba, and Eu; and x represents a valence number of M) supported by the support base.

Production system and method of production for product selected from nitrogen-containing product and fermented and cultured product

The present invention provides a supported metal catalyst, a method for synthesizing ammonia using said catalyst, and a supported metal material in which a transition metal is supported on a support, wherein the support is a metal hydride represented by general formula (1): XH. . . (1); and in general formula (1), X represents at least one selected from the group consisting of atoms from Groups 2 and 3, and lanthanoid atoms, and n is in a range of 2&#x3c;n&#x3c;3.

Supported metal material, supported metal catalyst, and ammonia synthesis method using the same

A novel catalyst capable of selectively catalyzing conversion from glucose to fructose in water or in an aqueous solution is provided. The catalyst is a solid catalyst for a hydride isomerization reaction from glucose to fructose performed in water or in an aqueous solution, comprising a group 13 element oxide whose surface has been subjected to a phosphoric acid treatment.

Solid catalyst for hydride isomerization reaction in an aqueous medium

An ammonia synthesis catalyst having high activity is obtained by having a two-dimensional electride compound having a lamellar crystal structure such as CaN support a transition metal. However, since the two-dimensional electride compound is unstable, the stability of the catalyst is low. In addition, in cases where a two-dimensional electride compound is used as a catalyst support, it is difficult to shape the catalyst depending on reactions since the two-dimensional electride compound has poor processability. A composite which includes a transition metal, a support and a metal amide compound, wherein the support is a metal oxide or a carbonaceous support; and the metal amide compound is a metal amide compound represented by general formula (1).M(NH)&#x2003;&#x2003;(1)(In general formula (1), M represents at least one metal atom selected from the group consisting of Li, Na, K, Be, Mg, Ca, Sr, Ba and Eu; and x represents the valence of M.).

Composite, method for producing composite, ammonia synthesis catalyst, and ammonia synthesis method

A catalyst is provided which is used for continuously synthesizing ammonia using a gas containing hydrogen and nitrogen as a raw material, wherein a transition metal which exhibits catalytic activity is supported by a support, and the support is a two-dimensional electride or a precursor thereof. The two-dimensional electride or the precursor thereof is a metal nitride represented by MxNyHz (M represents one or two or more of Group II metals selected from the group consisting of Mg, Ca, Sr and Ba, and x, y and z are in ranges of 1&#x2264;x&#x2264;11, 1&#x2264;y&#x2264;8, and 0&#x2264;z&#x2264;4 respectively, in which x is an integer, and y and z are not limited to an integer) or MN(M is the same as above), or a metal carbide selected from the group consisting of YC, ScC, GdC, TbC, DyC, HoC and ErC. These catalysts are used for continuously reacting nitrogen with hydrogen, which are raw materials, on the catalyst, wherein the reaction is performed in an ammonia synthesis reaction system under the preferable conditions of a reaction temperature which is equal to or higher than 100&#xb0; C. and equal to or lower than 600&#xb0; C., and a reaction pressure which is equal to or higher than 10 kPa and lower than 20 MPa.

Supported metal catalyst and method of synthesizing ammonia using the same

If a conductive mayenite compound having a large specific surface area is obtained, the usefulness thereof in respective applications is remarkably increased. A conductive mayenite compound powder having a conduction electron density of 10cmor more and a specific surface area of 5 mgor more is produced by: the following steps: (1) forming a precursor powder by subjecting a mixture of a starting material powder and water to a hydrothermal treatment; (2) forming a mayenite compound powder by heating and dehydrating the precursor powder; (3) forming an activated mayenite compound powder by heating the compound powder in an inert gas atmosphere or in a vacuum; and (4) injecting electrons into the mayenite compound through a reduction treatment by mixing the activated mayenite compound powder with a reducing agent.

Method for producing conductive mayenite compound powder having large specific surface area

A metal-supporting catalyst for decomposing ammonia into hydrogen and nitrogen. The catalyst shows a high performance with a low cost and being advantageous from the viewpoint of resources, and an efficient method for producing hydrogen using the catalyst. The catalyst catalytically decomposes ammonia gas to generate hydrogen. The hydrogen generation catalyst includes, as a support, a mayenite type compound having oxygen ions enclosed therein or a mayenite type compound having 10cmor more of conduction electrons or hydrogen anions enclosed therein, and metal grains for decomposing ammonia are supported on the surface of the support. Hydrogen is produced by continuously supplying 0.1-100 vol % of ammonia gas to a catalyst layer that comprises the aforesaid catalyst, and reacting the same at a reaction pressure of 0.01-1.0 MPa, at a reaction temperature of 300-800&#xb0; C. and at a weight hourly space velocity (WHSV) of 500/mlghor higher.

Catalyst for producing hydrogen and method for producing hydrogen

If a conductive mayenite compound having a large specific surface area is obtained, the usefulness thereof in respective applications is remarkably increased. A conductive mayenite compound powder having a conduction electron density of 10cmor more and a specific surface area of 5 mgor more is produced by: (1) a step for forming a precursor powder by subjecting a mixture of a starting material powder and water to a hydrothermal treatment; (2) a step for forming a mayenite compound powder by heating and dehydrating the precursor powder; (3) a step for forming an activated mayenite compound powder by heating the compound powder in an inert gas atmosphere or in a vacuum; and (4) a step for injecting electrons into the mayenite compound through a reduction treatment by mixing the activated mayenite compound powder with a reducing agent.

Method for producing conductive mayenite compound powder

It is an object of the present invention to provide a novel sterilization method capable of killing not only microorganisms in water, but also microorganisms in a gas. Specifically, the present invention provide a method for sterilizing a gas or liquid, comprising contacting a microorganism in a gas or liquid with a material containing an amorphous carbon having a sulfo group introduced therein.

Sterilization method

The present invention provides a catalyst substance that is stable and performs well in the synthesis of ammonia, one of the most important chemical substances for fertilizer ingredients and the like. The catalyst substance exhibits catalytic activity under mild synthesis conditions not requiring high pressure, and is also advantageous from a resource perspective. Further provided is a method for producing the same. This catalyst comprises a supported metal catalyst that is supported on a mayenite type compound including conduction electrons of 10cmor more and serving as a support for the ammonia synthesis catalyst. The mayenite type compound used as the support may take any form, including that of powder, a porous material, a sintered body, a thin-film, or a single crystal. Use of this catalyst makes it possible to increase the electron donating ability toward a transition metal.

Ammonia synthesis catalyst and ammonia synthesis method

The object is to produce a polysaccharide and/or a monosaccharide efficiently by hydrolyzing a different polysaccharide efficiently. The hydrolysis of a polysaccharide is an important means for producing a monosaccharide that can be used as a starting material for the production of ethanol, the solubilization of a water-insoluble polysaccharide, and the production of a useful water-soluble low-polymeric saccharide or the like. For achieving the object, a polysaccharide to be hydrolyzed is reacted with water in the presence of a carbonaceous material having sulfonic acid group therein to cause the hydrolysis of the polysaccharide to be hydrolyzed, thereby producing a other polysaccharide and/or a monosaccharide.

Process for production of polysaccharide and/or monosaccharide by hydrolysis of different polysaccharide

An amorphous carbon having sulfonate group introduced therein is provided which is characterized in that chemical shifts of a condensed aromatic carbon 6-membered ring and a condensed aromatic carbon 6-membered ring having sulfonate group bonded thereto are detected in aC nuclear magnetic resonance spectrum and that at least a diffraction peak of carbon (002) face whose half-value width (2&#x3b8;) is in the range of 5 to 30&#xb0; is detected in powder X-ray diffractometry, and which exhibits proton conductivity. This sulfonated amorphous carbon is very useful as a proton conductor material or solid acid catalyst because it excels in proton conductivity, acid catalytic activity, thermal stability and chemical stability and can be produced at low cost.

Sulfonated amorphous carbon, process for producing the same and use thereof

A sulfonic acid group-containing carbonaceous material that is useful as a solid acid catalyst for various reactions such as hydration of olefins and acidolysis reaction of hydroperoxide and also useful as a proton conductor material having excellent proton conductivity is provided. In addition, an economical and environmentally friendly method for producing methyl ethyl ketone is provided. A sulfonic acid group-containing carbonaceous material having high catalytic activities for various acid catalyst reactions and also having high proton conductivity can be obtained by carbonization and sulfonation of a phenolic resin.

Sulfonic acid group-containing carbonaceous material

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Yokohama, Japan

Michikazu Hara