Polyaluminum salts and their uses in preparation of high-purity colloidal aluminum-silica composite particles and zeolites
US10654724B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2017 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | May 22, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01F7/46
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed are novel aqueous aluminum complex compositions and methods of making and using them. The novel compositions comprise very low halide content, even when made from aluminum chlorohydrate. The compositions find use in the production of zeolites, coatings, abrasives, binders, and refractories; and in the treatment of wastewater for example. The methods of making the novel compositions include passing a first aqueous aluminum complex composition through an anion exchange column or otherwise contacting the first composition with the anion exchange resin to provide a second aqueous aluminum complex composition that is different from the first aqueous aluminum complex composition. Also disclosed are methods of making zeolites and aqueous silica-alumina compositions from the novel aqueous aluminum complex compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.