Metal alloy for electrochemical oxidation reactions and...

Details Metal alloy for electrochemical oxidation reactions and... Metal alloy for electrochemical oxidation reactions and...

2011-04-12

2011-04-12

Hailey, Patricia L (Department: 1732)

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

Catalyst or precursor therefor

Inorganic carbon containing

C502S180000, C502S182000, C420S462000, C420S466000, C429S524000, C429S526000

Reexamination Certificate

active

07923402

ABSTRACT:
A method of producing a finely divided ruthenium-platinum alloy catalyst comprising:(i) forming a mixture of platinum β-diketone and ruthenium β-diketone on a carbon support,(ii) both, platinum β-diketone and ruthenium β-diketone having a decomposition temperature within 20° C. of each other,(iii) decomposing said platinum β-diketone and ruthenium β-diketone on a carbon support at a temperature of at least 260° C. in the absence of a reducing agent(iv) followed by a reduction effected with a hydrogen containing gas mixture and a method from oxidizing methanol.

REFERENCES:
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patent: 4431574 (1984-02-01), Bournonville et al.
patent: 6303809 (2001-10-01), Chi et al.
patent: 6551960 (2003-04-01), Laine et al.
patent: 2008/0280753 (2008-11-01), Watanabe et al.
“Oxidation of Methanol on 2nd and 3rd Row Group VIII Transition Metals (Pt, Ir, Os, Pd, Rh, and Ru): Application to Direct Methanol Fuel Cells,” Jeremy Kua et al. J. Am. Chem. Soc. 1999, 121, pp. 10928-10941.
“Novel Pt-Ru nanoparticles formed by vapour deposition as efficient electrocatalyst for methanol oxidation Part 1: Preparation and physical characterization,” Pasupathi Sivakumar et al. Electrochimica Acta 50 (2005), pp. 3312-3319.

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