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Method for producing conductive mayenite compound powder

Foreign code F170009230
File No. J1014-08CN-2
Posted date Sep 14, 2017
Country China
Application number 201610637803
Gazette No. 106277000
Date of filing Aug 20, 2013
Gazette Date Jan 4, 2017
International application number JP2013072163
International publication number WO2014034473
Date of international filing Aug 20, 2013
Date of international publication Mar 6, 2014
Priority data
  • P2012-189371 (Aug 30, 2012) JP
  • 2013CN-80044557 (Aug 20, 2013) CN
Title Method for producing conductive mayenite compound powder
Abstract (CN106277000)
If a conductive mayenite compound having a large specific surface area is obtained, the usefulness thereof in respective applications is remarkably increased.
A conductive mayenite compound powder having a conduction electron density of 1015 cm3 or more and a specific surface area of 5 m2g-1 or more is produced by: (1) a step for forming a precursor powder by subjecting a mixture of a starting material powder and water to a hydrothermal treatment; (2) a step for forming a mayenite compound powder by heating and dehydrating the precursor powder; (3) a step for forming an activated mayenite compound powder by heating the compound powder in an inert gas atmosphere or in a vacuum; and (4) a step for injecting electrons into the mayenite compound through a reduction treatment by mixing the activated mayenite compound powder with a reducing agent.
Scope of claims [claim1]
1. One conductive mayenite type compound, a concentration of conduction electrons 1x1015 cm-3 or more, characterized in, specific surface area of 5m2 g-1 or more.
[claim2]
2. Conductive mayenite type compound according to claim 1, characterized in, conduction electron concentration of 2.3x1021 cm-3 or less.
[claim3]
3. Conductive mayenite type compound according to claim 1, characterized in, specific surface area of 31m2 g-1 or less.
[claim4]
4. Conductive mayenite type compound according to claim 1, characterized in, has a primary particle diameter of not more than 100 nm in a powder form, or in the porous body having fine pores of the structure of the block.
[claim5]
5. A supported metal catalyst, wherein the metal supported on a support, characterized in, carrier is a conductive mayenite type compound, the conductive mayenite type compound of the conduction electrons at a concentration of 1x1015 cm-3 or more and specific surface area of 5m2 g-1 or more.
[claim6]
6. The supported metal catalyst according to claim 5, characterized in, metal is a transition metal.
[claim7]
7. The supported metal catalyst according to claim 6, characterized in, to an active transition metal with ammonia.
[claim8]
8. Claim 5-7 supported metal catalyst according to any one, characterized in, vector of the specific surface area of 31m2 g-1 or less.
[claim9]
9. The supported metal catalyst according to claim 5, characterized in, has a primary particle diameter of not more than 100 nm in a powder form, or in the porous body having fine pores of the structure of the block.
  • Applicant
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
  • TOKYO INSTITUTE OF TECHNOLOGY
  • Inventor
  • HOSONO HIDEO
  • HARA MICHIKAZU
  • INOUE YASUNORI
  • KITANO MASAAKI
  • HAYASHI FUMITAKA
  • YOKOYAMA TOSHIHARU
  • MATSUISHI SATORU
  • TODA YOSHITAKE
IPC(International Patent Classification)
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