The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 03, 2012
Filed:
Mar. 10, 2009
Wu Mei, Yokohama, JP;
Taishi Fukazawa, Fuchu, JP;
Itsuko Mizutani, Yokohama, JP;
Tsuyoshi Kobayashi, Kawasaki, JP;
Yoshihiko Nakano, Yokohama, JP;
Mina Farag, Fremont, CA (US);
Shinji Aoki, Fremont, CA (US);
Yi-qun LI, Fremont, CA (US);
Wu Mei, Yokohama, JP;
Taishi Fukazawa, Fuchu, JP;
Itsuko Mizutani, Yokohama, JP;
Tsuyoshi Kobayashi, Kawasaki, JP;
Yoshihiko Nakano, Yokohama, JP;
Mina Farag, Fremont, CA (US);
Shinji Aoki, Fremont, CA (US);
Yi-Qun Li, Fremont, CA (US);
Kabushiki Kaisha Toshiba, Tokyo, JP;
Intematix Corporation, Fremont, CA (US);
Abstract
A methanol oxidation catalyst comprises a material of composition:PtMTain which Pt is platinum, Ta is tantalum, M is an element includes at least one selected from the group consisting of V (vanadium), W (tungsten), Ni (nickel) and Mo (molybdenum), x is 40 to 98 at. %, z is 1.5 to 55 at. %, and u is 0.5 to 40 at. %. To maximize catalytic activity the material is preferably in the form of nanoparticles. The values of x, z and u are selected such that the element exhibits X-ray photoelectron spectroscopy peaks derived from an oxygen bond and a metal bond in which a peak area derived from the oxygen bond is twice or less of a peak area derived from the metal bond.