Japan Science and Technology Agency

Furuya Metal Co., Ltd.

National Institute for Materials Science

Hokkaido University

Mitsuhiro Arisawa

Naoyuki Hoshiya

Satoshi Shuto

Satoshi Arai

Shiro Tsukamoto

Atsushi Nishida

Masahiko Shimoda

Provided is a material that, when compared with SAPd, exhibits the similar activity in cross-coupling (CC) reactions, can decrease the amount of catalytic metal that is mixed into the reaction product, and increases the number of times use can be repeated. Provided are a catalyst and a catalyst precursor that use a catalytic metal other than Pd and that exhibit the CC reaction activity similar to when Pd is used. Provided are a catalyst and a catalyst precursor that exhibit the similar CC reaction activity when using Pd or a catalytic metal other than Pd, without using a carrier such as metal and without using piranha solution. A composite wherein catalytic metal nanoparticles are dispersed in a continuous phase comprising a polymer having C2-6 alkylene group units and phenylene group units (an alkylene group unit being bonded to at least the first and fourth position of the phenylene group unit). The particle diameter of the catalytic metal nanoparticles is at most 20 nm. A composite structure including a substrate, and the aforementioned composite provided to the surface of the substrate. A method for manufacturing the composite structure by dehydrocondensating, in the presence of a catalytic metal compound, a benzene compound having at least two alkyl groups (two of the alkyl groups being at the first and fourth position) in order to form the composite on the substrate surface.

Composite containing catalytic metal nanoparticles, and use for same

The present invention provides the catalyst precursor that has excellent safety and stability, has high stable activity retention rate, can be recycled, increases yield resulted from a reaction, and is easily processed into various forms. The catalyst precursor comprises a structure in which the entire structure is composed of gold or a gold-based alloy and the surface of the structure is modified with elemental sulfur, or at least the surface of the structure is composed of gold or a gold-based alloy and the surface of the structure is modified with elemental sulfur, and a catalytic metal compound supported on the structure, wherein the catalyst precursor has peaks derived from the catalytic metal compound and also sulfur as analyzed by photoelectron spectroscopy, and wherein the peak derived from sulfur is of the sulfur 1s orbital observed within a range of 2470 eV&#xb1;2 eV in terms of the peak top position.

Catalyst precursor, method for producing the same, method for using the same, and reactor that uses the same

The present invention relates to a substrate having an organic metal complex bonded on the surface thereof, which is prepared by the vapor deposition of a sulfur atom onto a substrate followed by bonding of an organic metal complex such as tetrakis-triphenylphosphine palladium [Pd(PPh)] to the surface of the substrate; a substrate bonded transition metal catalyst using said substrate; and a method for the preparation thereof. The above substrate and metal catalyst allow the solution of some problems with respect to the safety and stability of an organic metal complex in its use, the removal of trace amounts of metals in a reaction product, waste water treatment and the like.

Substrate bonded transition metal catalyst and method for preparation thereof

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Suita, Japan

Mitsuhiro Arisawa