Japan, Sept. 16 -- NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY has got intellectual property rights for 'METHOD OF PRODUCING POROUS ALUMINA POWDER, AND METHOD OF REMOVING AMPHIPHILIC ORGANIC MOLECULE.' Other related details are as follows:
Application Number: JP,2022-172733
Category (FI): C01F7/30
Stage: PROBLEM TO BE SOLVED: To provide a method of producing porous alumina powder, capable of preventing the fouling of a firing furnace in a firing process and producing porous alumina powder with a large specific surface area.SOLUTION: A method of producing porous alumina powder includes the following steps: a preparation step of preparing an alumina precursor solution including an aluminum compound, amphiphilic organic molecules, an acid and a first solvent; a drying step of drying the alumina precursor solution to produce dry powder including a composite of alumina and the amphiphilic organic molecules; and a washing step of washing the dry powder with a washing liquid including a second solvent to produce porous alumina powder removed of the amphiphilic organic molecules by elution. The specific dielectric constant of the second solvent ranges from 8 to 32, and the washing liquid does not substantially include acid.SELECTED DRAWING: None (Grant)
Filing Date: Oct. 27, 2022
Publication Date: Feb. 6, 2024
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
