Process for preparing shaped body of alumina
US4320074A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 1979 |
| Grant date | Mar 16, 1982 |
| Priority date | — |
| Expiry date | May 18, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/19
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The process relates to the preparation of a shaped body having at least one dimension less than 100 microns and comprising alumina or an alumina hydrate. An aqueous composition comprising a water-soluble aluminum compound, for example aluminum chloride, sulphate, acetate, formate, propionate, oxalate, phosphate or nitrate and a water-soluble organic polymer is formed into the desired shape. The body so formed is dried, and is subjected to hydrothermal treatment at a temperature of at least 200.degree. C. to decompose the aluminum compound to alumina or an alumina hydrate. The body is optionally further heated subsequent to the hydrothermal treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.