Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Reexamination Certificate
2007-06-26
2007-06-26
Langel, Wayne A. (Department: 1754)
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
C424S688000, C429S006000, C429S231600, C502S341000
Reexamination Certificate
active
10492938
ABSTRACT:
There is provided a C12A7 compound capable of selectively and reversibly clathrating X−ions, such as active oxygen radicals, with improved controllability. The C12A7 compound clathrating OH−ions and On−at a concentration of 2×1019cm−3or less can be prepared by subjecting a mixed material containing Ca and Al to a solid phase reaction at a firing temperature not lower than 1200° C. and lower than 1449° C. in a dry oxygen atmosphere having an oxygen partial pressure of 0.1 atm or more and a water vapor partial pressure of 10−3atm or less, keeping the resultant product at a temperature of 1200° C. or higher, and cooling rapidly. The C12A7 compound is heat-treated to clathrate OH−ions at a concentration of 2×1019cm−3or less, and On−at a high concentration of more than 2×1019cm−3. The compound can reversibly clathrate or release On−ion radicals through the elevation or lowering of the temperature thereof in a temperature range of 300 to 850° C. The compound is useful for an oxidation catalyst, an anti-bacterial agent, an ion conducting material, an electrode for a solid-electrolyte fuel cell, and the like.
REFERENCES:
patent: WO01/791115 (2001-10-01), None
R. Stöber; Journal of Solid State Chemistry, vol. 81, pp. 152-164. 1989. Cited in the PCT search rpt.
H. Hosono et al.; Inorganic Chemistry, vol. 26, No. 8, pp. 1192-1195. 1987. Cited in the PCT search rpt.
H. Hosono et al.; Journal of the Material Science Society of Japan, vol. 33, No. 4, pp. 171-172. 1996. Cited in the PCT search rpt.
J. A. Imlach et al.; Cement and Concrete Research, vol. 1, pp. 57-61. 1971. Cited in the PCT search rpt.
Patent Abstracts of Japan, Pub. No. 2002-316867, dated Oct. 31, 2002.
H. Sango et al.; Journal of the Ceramic Society of Japan, vol. 102, No. 8, pp. 772-777. 1994.
Von Hnas Bartl et al; N. Jahrbuch F. Mineralogie. Monastshefre 1970. pp. 547-552.
Hayashi Katsuro
Hirano Masahiro
Hosono Hideo
Fiorito James
Japan Science and Technology Agency
Langel Wayne A.
Westerman, Hattori, Daniels & Adrian , LLP.
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