Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Halogen or compound containing same
Reexamination Certificate
2007-03-13
2010-10-26
Mayes, Melvin C (Department: 1793)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Halogen or compound containing same
C502S230000
Reexamination Certificate
active
07820584
ABSTRACT:
Disclosed is a photocatalyst which is excited when irradiated with visible light and exhibits high photocatalytic activity stably. This photocatalyst has a white hue with little yellow tint. Specifically, titanium oxide particles and a halogenated platinum compound are heated and mixed in a liquid medium, so that the surfaces of the titanium oxide particles are loaded with the halogenated platinum compound; then the pH of the liquid medium is adjusted to 5 or less; and after that, the liquid medium is neutralized if necessary. By such a process, there can be produced a photocatalyst having a specific surface area of 10-100 m2/g, wherein the surfaces of the titanium oxide particles are loaded with the halogenated platinum compound and the b* value of the powder color according to the Hunter color system is not more than 6.
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Ishibai Youichi
Nishikawa Takashi
Sato Junya
Manelli Denison & Selter PLLC
Mayes Melvin C
Nihon Nohyaku Co. Ltd.
Stalder Melissa
White, Jr. Paul E.
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