Tokyo Institute of Technology

Japan Science and Technology Agency

Tsubame Bhb Co., Ltd.

Ajinomoto Co., Ltd.

Institute of Science Tokyo

Masaaki Kitano

Hideo Hosono

Toshiharu Yokoyama

Michikazu Hara

Yoshitake Toda

Fumitaka Hayashi

Yasunori Inoue

Kazuhisa Kishida

Jiang Li

Munenobu Ito

Hiroyuki Kojima

Satoru Matsuishi

Kazuteru Yamada

Mitsuhiro Kishino

Hiromi Noguchi

Toru Numaguchi

Shigeki Kawamura

Kiya Ogasawara

Hiroshi Mizoguchi

Yangfan Lu

Jun Kujirai

Takaya Ogawa

Sung Wng Kim

Shinji Kambara

Yutong Gong

Tomofumi Tada

Jiazhen Wu

Tiannan Ye

Ryu Takashima

Kayato Ooya

Kyosuke Yamagata

Yo Agawa

A molded sintered body containing a mayenite type compound, an inorganic binder sintered material, and a transition metal, wherein a content of the inorganic binder sintered material is 3 to 30 parts by mass with respect to 100 parts by mass of the molded sintered body, and the molded sintered body has at least one pore peak in each of a pore diameter range of 2.5 to 20 nm and a pore diameter range of 20 to 350 nm. A method for producing the molded sintered body, including mixing a precursor of a mayenite type compound and a raw material of an inorganic binder sintered material to prepare a mixture; molding the mixture to prepare a molded body of the mixture; firing the molded body to prepare a fired product; and supporting a transition metal on the fired product to produce a molded sintered body.

Molded sintered body, and method for producing molded sintered body

Provided is a method for manufacturing a catalyst with which it is possible to obtain a supported metal ammonia synthesis catalyst, in which there are restrictions in terms of producing method and producing facility, and particularly large restrictions for industrial-scale producing, in a more simple manner and so that the obtained catalyst has a high activity. This method for manufacturing an ammonia synthesis catalyst includes: a first step for preparing 12CaO·7AlOhaving a specific surface area of 5 m/g or above; a second step for supporting a ruthenium compound on the 12CaO·7AlO; and a third step for performing a reduction process on the 12CaO·7AlOsupporting the ruthenium compound, obtained in the second step. This invention is characterized in that the reduction process is performed until the average particle diameter of the ruthenium after the reduction process has increased by at least 15% in relation to the average particle diameter of the ruthenium before the reduction process.

Method for manufacturing ammonia synthesis catalyst, and method for manufacturing ammonia

The invention is related to a layered double hydroxide electride which can be produced without high-temperature treatment, and a production method of which cost can be reduced. The layered double hydroxide electride contains electrons between layers and has an electron density of 2.0×10cmor more. The method of producing the layered double hydroxide electride includes a step of mixing a starting layered double hydroxide with an electron exchanger for exchanging anions existing between layers of the starting layered double hydroxide for electrons to produce the layered double hydroxide electride.

Layered double hydroxide electride and method for producing same

A perovskite-type oxynitride hydride which can be easily synthesized achieves both improvement in catalytic performance and stabilization when used as a support of a catalyst. The oxynitride hydride is represented by general formula (1a) or (1b):ABONH  (1a)ABONH(1b) In the above general formulas (1a) and (1b), A is at least one selected from the group consisting of Ba and Sr; B is at least one selected from the group consisting of Ce, La and Y; x represents a number represented by 0.2≤x≤2.0; y represents a number represented by 0.1≤y≤1.0; and z represents a number represented by 0.1≤z≤1.0.

Oxynitride hydride, supported metal material containing oxynitride hydride, and catalyst for ammonia synthesis

The present invention is related to an oxynitride-hydride which is capable of achieving both stabilization and improvement of catalyst performance when used as a support, and the oxynitride-hydride can be easily synthesized. The oxynitride-hydride is represented by the following general formula (1),ABONH  (1)

Oxynitride-hydride, metal-supported material containing oxynitride-hydride, and ammonia synthesis catalyst

The invention provides a method of producing a metal oxyhydride, capable of synthesizing the metal oxyhydride under reaction conditions close to atmospheric pressure, and excellent in productivity and cost. The method of producing a metal oxyhydride of the present invention includes reacting an oxide with a metal hydride in a hydrogen atmosphere. A non-oxygen element constituting the oxide comprises only one kind of non-oxygen element. A pressure condition of the reaction is 0.1 to 0.9 MPa, and a temperature of the reaction is 500 to 1000° C.

Method of producing metal oxyhydride, metal oxyhydride, and method of synthesizing ammonia using same

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

Provided are a supported metal material showing high catalytic activity, a supported metal catalyst, a method of producing ammonia and a method of producing hydrogen using the supported metal catalyst, and a method of producing a cyanamide compound. The supported metal material of the present invention is a supported metal material in which a transition metal is supported on a support, and the support is a cyanamide compound represented by the following general formula (1): MCN(1), wherein M represents a group II element of the periodic table, and the specific surface area of the cyanamide compound is 1 mgor more.

Supported metal material, supported metal catalyst, method of producing ammonia, method of producing hydrogen and method of producing cyanamide compound

Provided are an intermetallic compound having high stability and high activity, and a catalyst using the same. A hydrogen storage/release material containing an intermetallic compound represented by formula (1): RTX . . . (1) wherein R represents a lanthanoid element, T represents a transition metal in period 4 or period 5 in the periodic table, and X represents Si, Al or Ge.

Intermetallic compound, hydrogen storage/release material, catalyst and method for producing ammonia

Provided is a method for manufacturing a catalyst with which it is possible to obtain a supported metal ammonia synthesis catalyst, in which there are restrictions in terms of producing method and producing facility, and particularly large restrictions for industrial-scale producing, in a more simple manner and so that the obtained catalyst has a high activity. This method for manufacturing an ammonia synthesis catalyst includes: a first step for preparing 12CaO.7AlOhaving a specific surface area of 5 m/g or above; a second step for supporting a ruthenium compound on the 12CaO.7AlO; and a third step for performing a reduction process on the 12CaO.7AlOsupporting the ruthenium compound, obtained in the second step. This invention is characterized in that the reduction process is performed until the average particle diameter of the ruthenium after the reduction process has increased by at least 15% in relation to the average particle diameter of the ruthenium before the reduction process.

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

An electride, which is more stable and can be more easily obtained, is provided or is made available, and as a result, a catalyst particularly useful for chemical synthesis, in which the electride is particularly used, is provided. A transition metal-supporting intermetallic compound having a transition metal supported on an intermetallic compound represented by the following formula (1): AX. . . (1) wherein A represents a rare earth element, and X represents Si or Ge.

Transition-metal-supporting intermetallic compound, supported metallic catalyst, and ammonia producing method

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.

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Tokyo, Japan

Masaaki Kitano