Process for production of compound oxides
AssigneeToyota Jidosha Kabushiki Kaisha
InventorShinichi Takeshima
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Abstract
To provide a process for production of compound oxides having homogeneously diffused and mixed elements, there is provided a process for production of compound oxides, comprising contacting an organic phase having dissolved therein an organic compound which produces the hydroxide of a first element when hydrolyzed, with an aqueous phase containing a second element as an ion, to produce the hydroxide of the first element by hydrolysis reaction of the organic compound at the interface while incorporating the second element in the product, and firing the resulting product to produce a compound oxide of the first element and second element. Third or additional elements may be included in the aqueous phase to produce compound oxides comprising third or additional elements.
Claims7
A process for production of a compound oxide, comprising
- contacting an organic phase having dissolved therein an organic compound which produces a hydroxide of a first element when hydrolyzed, with an aqueous phase containing a second element as an ion, to produce a product of the hydroxide of the first element by hydrolysis reaction of the organic compound at their interface between said organic and aqueous phases while incorporating the second element in the product, and
- firing the resulting product to produce a compound oxide of the first element and second element.
A process for production of a compound oxide of zirconium and cerium, comprising
- preparing a microemulsion comprising an organic phase dispersed in an aqueous phase, said organic phase having dissolved therein a zirconium alkoxide, said aqueous phase containing a cerium salt;
- conducting said organic phase with said aqueous phase to produce a product of zirconium hydroxide by hydrolysis reaction of the zirconium alkoxide at their interface between said organic and aqueous phases while incorporating the zirconium element in the product, and
- firing the resulting product to produce a compound oxide of zirconium and cerium.
Dependencies are inferred from the claim text.