Japan Science and Technology Agency

Mitsubishi Gas Chemical Company, Inc.

Osaka University

Kyushu University

Seiji Ogo

Shunichi Fukuzumi

Tomoyoshi Suenobu

Kenji Kato

Masaki Nagata

Shun-ichi Fukuzumi

Shuichi Fukuzumi

To provide an economical fuel cell electrode catalyst which can be used in place of platinum as a simple substance or a platinum alloy and has easy-to-control catalytic power, a molecular metal complex is used as a fuel cell electrode catalyst which molecular metal complex is a mononuclear or multinuclear coordination compound that has a particular structure, that is not a polymer compound, and that does not have a layered structure.

Electric power generation method using electrode catalyst for fuel cell

An object of the present invention is to provide a novel method for producing hydrogen peroxide by direct synthesis that is capable of taking the place of the conventional anthraquinone process, and to provide a catalyst used in the production method. The present invention is a metal complex represented by the following general formula (1), (2), (3) or (4). 

Metal complex and method for producing hydrogen peroxide

An object of the present invention is to provide a method for synthesis of keto acids by hydration of an acetylene compound (acetylene-carboxylic acids) under mild conditions free from harmful mercury catalysts and a method for synthesis of amino acids from acetylene-carboxylic acids in a single container (one-pot or tandem synthesis). In one embodiment of the method according to the present invention for synthesis of keto acids, acetylene-carboxylic acids is hydrated in the presence of a metal salt represented by General Formula (1), where Mrepresents an element in Group VIII, IX, or X of the periodic table, and X, X, or Xligand represents halogen, HO, or a solvent molecule, and k represents a valence of a cation species, and Y represents an anion species, and L represents a valence of the anion species, and each of K and L independently represents 1 or 2, and k&#xd7;m=L&#xd7;n.

Method for synthesis of keto acids or amino acids by hydration of acetylene compound

A catalyst for the decomposition of formic acid including a dinuclear metal complex represented by a formula (1) below, a tautomer or stereoisomer thereof, or any of their salts,  where Mand Mare transition metals; Ar is a ligand having aromaticity and may be unsubstituted or substituted; Rto Rare each independently a hydrogen atom, an alkyl group, or the like, or Rand Rmay together form a &#x2014;CH&#x2550;CH&#x2014;, where Hs in the &#x2014;CH&#x2550;CH&#x2014; may be each independently replaced by an alkyl group or the like, and Rand Rmay together form a &#x2014;CH&#x2550;CH&#x2014;, where Hs in the &#x2014;CH&#x2550;CH&#x2014; may be each independently replaced by an alkyl group or the like; L is an arbitrary ligand or is absent; and m is a positive integer, 0, or a negative integer.

Catalyst for decomposition of formic acid, method for decomposing formic acid, process for producing hydrogen, apparatus for producing and decomposing formic acid, and method for storing and generating hydrogen

A photoacid generator comprising a metal hydride complex represented by the formula (I): wherein X represents a metal atom. The iridium hydride complex of the present invention can be used as an acid generator for chemically-amplified photoresists or color filters for liquid crystal, and in addition, can be widely applied in photographic-related or printing-related fields, or the like.

Photoacid generator

Carbon dioxide and water are mixed with an organometallic complex represented by general formula (1) below where R, R, R, R, R, and Rindependently represent a hydrogen atom or a lower alkyl group, M represents an element that can be coordinated to the benzene ring, Xand Xrepresent nitrogen-containing ligands, Xrepresents a hydrogen atom, a carboxylic acid residue, or HO, Xand Xmay be bonded to each other, Y represents an anion species, K represents a valency of a cation species, L represents a valency of an anion species, K and L independently represent 1 or 2, and K, m, L, and n are related to one another by K&#xd7;m=L&#xd7;n. This makes it possible to directly reduce carbon dioxide in water.

Growing community of inventors

Fukuoka, Japan

Seiji Ogo