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Title:
FINE TETRAHEDRAL PALLADIUM PARTICLE AND PROCESS FOR PRODUCING FINE METALLIC PARTICLE
Document Type and Number:
WIPO Patent Application WO/2007/105656
Kind Code:
A1
Abstract:
Fine tetrahedral palladium particles having high shape selectivity; and a process for producing fine metallic particles. The fine palladium particles comprise tetrahedral particles in a proportion of 60-100% by number. Also provided are: a palladium colloid obtained by evenly dispersing the fine palladium particles in a solvent; and a supported catalyst comprising a support comprising at least one of ceramics, carbon, and organic polymers and the fine particles dispersedly deposited on the surface and/or in pores of the support. The process for producing fine metallic particles comprises dissolving a four-nucleus metal complex precursor in a solvent to obtain a homogeneous solution and decomposing the metal complex in this homogeneous solution to thereby shape-selectively yield tetrahedral particles. Further provided is a process for producing the catalyst which comprises bringing the colloid into contact with a support comprising at least one of ceramics, carbon, and organic polymers. The colloid or the catalyst obtained by depositing the colloid on the support has high activity and high selectivity in a carbon-carbon bond formation reaction, hydrogenation reaction, etc.

Inventors:
KANEDA, Kiyotomi (1-1 Yamadaoka, Suita-sh, Osaka 71, 5650871, JP)
金田 清臣 (〒71 大阪府吹田市山田丘1番1号 国立大学法人大阪大学内 Osaka, 5650871, JP)
Application Number:
JP2007/054727
Publication Date:
September 20, 2007
Filing Date:
March 09, 2007
Export Citation:
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Assignee:
N.E. CHEMCAT CORPORATION (4-1 Hamamatsucho 2-chome, Minato-ku Tokyo, 24, 1056124, JP)
エヌ・イー ケムキャット株式会社 (〒24 東京都港区浜松町2丁目4番1号 Tokyo, 1056124, JP)
OSAKA UNIVERSITY (1-1 Yamadaoka, Suita-shi Osaka, 71, 5650871, JP)
国立大学法人大阪大学 (〒71 大阪府吹田市山田丘1番1号 Osaka, 5650871, JP)
International Classes:
B22F1/00; B01J23/44; B01J27/185; B22F9/00; B22F9/16; B22F9/24
Attorney, Agent or Firm:
IWAMIYA, Shushi (Iwamiya & Associates, Patent & Trademark Attorneys Nippon Bunjo-Jutaku-Kaikan Bldg., 3-6, Kanda Ogawa-mach, Chiyoda-ku Tokyo 52, 1010052, JP)
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