Aluminophosphorus compounds
US4418048A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1980 |
| Grant date | Nov 29, 1983 |
| Priority date | — |
| Expiry date | Jun 10, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B33/26
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides the following: PA0 (a) An aluminophosphorus compound wherein the atomic ratio of P to Al exceeds 1:1 and having anion exchange properties. PA0 (b) A process for preparing such an aluminophosphorus compound comprising treating an aluminous compound, for example a zeolite, a clay, or alumina with a melt comprising a phosphate, for example ammonium dihydrogen orthophosphate, and removing excess phosphate from the compound thereby formed. PA0 (c) A process for at least partially removing anions from an aqueous solution which comprises contacting the aqueous solution containing the anions with the aluminophosphorus compound. PA0 (d) A process for the chromatographic separation of two anions in aqueous solution wherein the chromatographic stationary phase comprises the aluminophosphorus compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.