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. 14, 2025
Filed:
May. 28, 2025
Method for synthesizing sio2al2o3 containing sol solution and method for forming porous alumina film
Renaissance Energy Research Corporation, Kyoto, JP;
National Institute of Technology, Tokyo, JP;
Akira Hasegawa, Aomori, JP;
Osamu Okada, Kyoto, JP;
Hiromi Nakamura, Kyoto, JP;
Shizuka Ogasawara, Kyoto, JP;
Renaissance Energy Research Corporation, Kyoto, JP;
National Institute Of Technology, Tokyo, JP;
Abstract
A method for synthesizing a sol solution for forming porous alumina films having high heat resistance and high specific surface area and excellent adhesion to various substrate surfaces is provided. The method can include preparing an alkoxysilane and an aluminum solution, precipitating a silicon compound adsorbed on aluminum hydroxide in a solution of the alkoxysilane and the aluminum solution, and washing the precipitate filtered from the mixed solution with water to prepare a precipitate cake. A slurry solution is prepared by adding water to the precipitate cake, a pH adjusting treatment is performed on the slurry solution, and then an autoclave treatment is performed to prepare SiOAlOcontaining sol solution. A pH value of the slurry solution is controlled within a specific pH range in which the solution state of the SiOAlOcontaining sol solution after the autoclave treatment is a sol state.