| 摘要 |
The present invention provides the following: An aluminophosphorus compound wherein the atomic ratio of P to AI exceeds 1:1 and having anion exchange properties. 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. 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. A process for the chromatographic separation of two anions in aqueous solution wherein the chromatographic stationary phase comprises the aluminophosphorus compound. |
