Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Halogen or compound containing same
Reexamination Certificate
2011-08-23
2011-08-23
Hailey, Patricia L (Department: 1732)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Halogen or compound containing same
C502S036000, C502S056000, C502S339000
Reexamination Certificate
active
08003561
ABSTRACT:
The invention aims at providing a platinum black material, without using an expensive and rare material, which is excellent in CO poisoning inhibiting effect, H2S poisoning inhibiting effect, SO4poisoning inhibiting effect and HCHO poisoning inhibiting effect, and a method for fluorinating platinum black. The platinum black material is characterized by fluorine adsorbed on its surface. The method for fluorinating platinum black is characterized by allowing platinum black to stand in a mixed gas atmosphere of n inert gas and fluorine in a low-pressure chamber to make fluorine adsorbed on the surface of the platinum black.
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Yoshida et al., “Tolerance to CO Poisoning on Fluorinated Pt Catalysts for the Anode of Polymer Electrolyte Fuel Cells,” Electrochemistry, vol. 73, No. 4, pp. 298-300 (Apr. 5, 2005).
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Hashiguchi Shinji
Ishida Masayoshi
Tashiro Yasutaka
Hailey Patricia L
Ishida Masayoshi
Stella Chemifa Corporation
Young & Thompson
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