National Institute of Advanced Industrial Science and Technology

Nissan Chemical Industries Limited

Agency of Industrial Science and Technology

Ministry of International Trade & Industry

Hiroaki Sakurai

Yutaka Kimura

Masatake Haruta

Masanori Ando

Tetsuhiko Kobayashi

Susumu Tsubota

Atsushi Ueda

Masato Kiuchi

Qiang Xu

Naoto Koshizaki

Makoto Hirasawa

Kenji Koga

Hiroshi Shioyama

[Problem] The main purpose is to provide a novel carbon-containing solid acid which has an excellent catalytic activity and of which the catalytic activity cannot be deteriorated easily even when used repeatedly. [Solution] A carbon-containing solid acid which comprises a carbonaceous material having a sulfonate group, wherein the carbonaceous material has a graphene structure in at least a part thereof and contains boron.

Carbon-containing solid acid having sulfonate group

A method of producing a composite nanoparticle (M-AO), having: generating, in an inert gas, an alloy (A-M) nanoparticle, which contains 0.1 at. % to 30 at. % of a noble metal (M), with the balance being a base metal (A) and inevitable impurities, and which has a particle size of 1 nm to 100 nm, to heat the alloy (A-M) nanoparticle and to bring the alloy (A-M) nanoparticle into contact with a supplied oxidizing gas during transportation of the alloy (A-M) nanoparticle with the inert gas, to oxidize the base metal component (A) in the floating alloy (A-M) nanoparticle, and to phase separate into the thus-oxidized base metal component (AO) and the noble metal component (M), to thereby obtain a composite nanoparticle (M-AO) having one noble metal particle (M) combined to the surface of a particulate base metal oxide (AO).

Noble metal-oxide combined nanoparticle, and, method of producing the same with high purity

A catalyst for the hydrogenation of CO and CO.sub.2 consists essentially of a metal oxide and gold. Synthesis of methanol and hydrocarbons by hydrogenation of CO and CO.sub.2 comprises establishing contact between a gaseous mass consisting of CO, CO.sub.2, and hydrogen and a catalyst consisting essentially of a metal oxide and gold.

Catalyst for hydrogenation and method for hydrogenation therewith

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Osaka, Japan

Hiroaki Sakurai