Patent ID: 7252767
Filing Date: 2007-08-07
Classification: B01J,C01G,C01P,C02F

Abstract:
1. A method of making hydrous zirconium oxide comprising the steps of providing a liquid comprising a zirconium compound and an alkali metal-containing reagent, said alkali metal-containing reagent comprising a compound selected from the group consisting of MOH-M 2 SO 4 , MOH-M 3 -PO 4 , and combinations thereof, where M is at least one selected from the group consisting of Li, Na and K, treating said zirconium compound with said alkali metal-containing reagent effective to form a mixture which achieves an uptake of alkali metal in an amount ranging from 0.5 to 2.5 milliequivalents/gram, heating said mixture to produce a reaction product and treating said reaction product with acid to form said hydrous zirconium oxide.