Catalyst, electrode for fuel electrode in fuel cell, and...

Details Catalyst, electrode for fuel electrode in fuel cell, and... Catalyst, electrode for fuel electrode in fuel cell, and...

2006-09-25

2009-08-25

Vanoy, Timothy C (Department: 1793)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S325000, C429S047000

Reexamination Certificate

active

07579298

ABSTRACT:
Catalysts contain noble metal-containing particles that has a composition except oxygen represented by a formula PtXRuYAZSnSand exhibits a mean particle diameter of from 0.5 nm to 10 nm, both inclusively. A is at least one element selected from a group consisting of Rh, Au, Pd, Ir and Os, and X, Y, Z and S are atomic ratios satisfying relations 30≦X ≦70, 30≦Y≦70, 0≦Z≦40, 0.5≦S≦8 and X+Y+Z+S=100.

REFERENCES:
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patent: 2007/0254806 (2007-11-01), Mei et al.
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patent: 07-246336 (1995-09-01), None
patent: 2004-281177 (2004-10-01), None
U.S. Appl. No. 12/121,282, filed May 15, 2008, Fukuzawa et al.
U.S. Appl. No. 11/737,393, filed Apr. 19, 2007, Mei et al.
U.S. Appl. No. 11/863,798, filed Sep. 28, 2007, Mei et al.
U.S. Appl. No. 11/863,856, filed Sep. 28, 2007, Mei et al.
Taeyoon Kim, et al., “Methanol Electrooxidation on Carbon-Supported Pt3Ru2Sn Ternary Catalyst”, Chemistry Letters, vol. 33, No. 4, 2004, pp. 478-479.
A. Lima, et al., “Investigation of Ternary Catalysts for Methanol Electrooxidation”, Journal of Applied Electrochemistry, vol. 31, 2001, pp. 379-386.

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