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:
Apr. 15, 2008
Filed:
Aug. 19, 2005
Applicants:
Masanori Sakai, Hitachiota, JP;
Kazumi Fujii, Hitachi, JP;
Kenji Araki, Mito, JP;
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C01B 3/04 (2006.01); B01J 21/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of catalytically decomposing water, which comprises contacting water with a composite catalyst comprising a solid acid catalyst and a solid base catalyst at an elevated temperature, wherein the composite catalyst contains the solid acid catalyst in an amount of 36 to 65% by weight and the balance being the solid base catalyst, and wherein the temperature is higher than a temperature at which pH values of the (HO/Oredox) potential and (HO/Hredox) potential are equal to each other, the redox potentials being given by a water potential—pH value diagram.