Patent ID: 6036886
Filing Date: 2000-03-14
Classification: B82Y,C01B,C01P,C09K

Abstract:
A process for producing a metal oxide host nanocrystal with an activator comprising the steps of:a) preparing a first aqueous solution of a compound containing the metal ion of the metal oxide host and a compound containing the activator, with the amount of the activator compound being present in an amount 1-20 molar % of the compound containing the metal ion of the metal oxide host;b) preparing a second aqueous solution of a hydroxide containing compound that will react with the compounds of the first aqueous solution;c) preparing a first mixture of an oil and a cationic micelle forming surfactant and a cosurfactant;d) preparing a second mixture of an oil and a cationic micelle forming surfactant and a cosurfactant;e) adding the first aqueous solution to the first mixture, so as to form a first water in oil microemulsion of the first solution;f) adding the second aqueous solution to the second mixture, so as to form a second water in oil microemulsion of the second solution;g) mixing the first and second water in oil solutions together, to form a nanocrystalline hydroxide compound of the metal oxide host and activator;h) removing any byproducts from the mixed solutions;i) collecting the nanocrystalline reactants; andj) converting the nanocrystalline hydroxide compound of the metal oxide host and activator to an nanocrystalline oxide compound of the metal oxide host and activator.