The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 06, 2015
Filed:
Dec. 06, 2011
Hideo Hosono, Tokyo, JP;
Michikazu Hara, Tokyo, JP;
Masaaki Kitano, Tokyo, JP;
Sung Wng Kim, Tokyo, JP;
Satoru Matsuishi, Tokyo, JP;
Yoshitake Toda, Tokyo, JP;
Toshiharu Yokoyama, Tokyo, JP;
Fumitaka Hayashi, Tokyo, JP;
Hideo Hosono, Tokyo, JP;
Michikazu Hara, Tokyo, JP;
Masaaki Kitano, Tokyo, JP;
Sung Wng Kim, Tokyo, JP;
Satoru Matsuishi, Tokyo, JP;
Yoshitake Toda, Tokyo, JP;
Toshiharu Yokoyama, Tokyo, JP;
Fumitaka Hayashi, Tokyo, JP;
TOKYO INSTITUTE OF TECHNOLOGY, Tokyo, JP;
Abstract
The present invention provides a catalyst substance that is stable and performs well in the synthesis of ammonia, one of the most important chemical substances for fertilizer ingredients and the like. The catalyst substance exhibits catalytic activity under mild synthesis conditions not requiring high pressure, and is also advantageous from a resource perspective. Further provided is a method for producing the same. This catalyst comprises a supported metal catalyst that is supported on a mayenite type compound including conduction electrons of 10cmor more and serving as a support for the ammonia synthesis catalyst. The mayenite type compound used as the support may take any form, including that of powder, a porous material, a sintered body, a thin-film, or a single crystal. Use of this catalyst makes it possible to increase the electron donating ability toward a transition metal.