TOP > 外国特許検索 > 12CaO.7A12O3 compound and method for preparation thereof

12CaO.7A12O3 compound and method for preparation thereof 実績あり

外国特許コード F110005314
整理番号 E06006US
掲載日 2011年8月31日
出願国 アメリカ合衆国
出願番号 49293802
公報番号 20050053546
公報番号 7235225
出願日 平成14年10月17日(2002.10.17)
公報発行日 平成17年3月10日(2005.3.10)
公報発行日 平成19年6月26日(2007.6.26)
国際出願番号 JP2002010806
国際公開番号 WO2003033406
国際出願日 平成14年10月17日(2002.10.17)
国際公開日 平成15年4月24日(2003.4.24)
優先権データ
  • 特願2001-321251 (2001.10.18) JP
  • 2002WO-JP10806 (2002.10.17) WO
発明の名称 (英語) 12CaO.7A12O3 compound and method for preparation thereof 実績あり
発明の概要(英語) (US7235225)
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 2x1019 cm-3 or 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 10-3 atm 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 2x1019 cm-3 or less, and On- at a high concentration of more than 2x1019 cm-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.
特許請求の範囲(英語) [claim1]
1. A 12CaO.7Al2O3 compound clathrating OH- ions at a concentration of 2 * 1019 cm-3 or less, and On- ion radicals at a high concentration of more than 2 * 1019 cm-3.
[claim2]
2. A method for preparing the 12CaO.7Al2O3 compound clathrating OH- ions at a concentration of 2 * 1019 cm-3 or less, and On- ion radicals at a high concentration of more than 2 * 1019 cm-3, comprising the steps of: subjecting a mixed material containing calcium (Ca) and aluminum (Al) to a solid phase reaction as a firing temperature not lower than 1200 deg. C. and lower than 1449 deg. C. in a dry oxygen atmosphere having an oxygen partial pressure of 10-2 MPa or more and a water vapor partial pressure of 10-4 MPa or less, andslowly cooling the resultant product to a temperature in the range of 300 to 800 deg. C., whereby the compound is provided.
[claim3]
3. A method for preparing the 12CaO.7Al2O3 compound clathrating OH- ions at a concentration of 2 * 1019 cm-3 or less, and On- ion radicals at a high concentration of more than 2 * 1019 cm-3, wherein the 12CaO.7Al2O3 compound including minus monovalent ion represented by X- and ion molecules at a concentration of 2 * 1019 cm-3 or less is kept at a fixed temperature in a temperature range of 300 to 800 deg. C. in a dry oxygen atmosphere having an oxygen partial pressure of 10-2 MPa or more and a water vapor partial pressure of 10-4 MPa or less, and is cooled rapidly or slowly to room temperature.
[claim4]
4. A method for reversibly clathrating or releasing On- ion radicals of 12CaO.7Al2O3 compound, comprising: elevating or lowering temperature of the 12CaO.7Al2O3 compound in a temperature range of 300 to 800 deg. C. in a dry oxygen atmosphere having an oxygen partial pressure of 0.1 atm or more and a water vapor partial pressure of 10-3 atm or less.
[claim5]
5. A method for preparing the 12CaO.7Al2O3 compound according to claim 2, wherein calcium carbonate, calcium hydroxide, or calcium oxide is used as a raw material for the calcium, and aluminum oxide or aluminum hydroxide is used as a raw material for the aluminum.
  • 発明者/出願人(英語)
  • HOSONO HIDEO
  • HIRANO MASAHIRO
  • HAYASHI KATSURO
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
国際特許分類(IPC)
米国特許分類/主・副
  • 423/600
  • 424/688
  • 429/231.6
  • 429/495
  • 502/341
参考情報 (研究プロジェクト等) ERATO HOSONO Transparent ElectroActive Materials AREA
ライセンスをご希望の方、特許の内容に興味を持たれた方は、問合せボタンを押してください。

PAGE TOP

close
close
close
close
close
close