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US5840641A Preparation of pulverulent zirconium dioxide 失效
粉状二氧化锆的制备

Preparation of pulverulent zirconium dioxide
摘要:
In the preparation of pulverulent zirconium dioxide by dissolving a zirconium compound in formic acid, removing the volatile components and calcining the residue, a chloride-free zirconium compound is dissolved in a formic acid/water mixture and the zirconium dioxide is obtained in a manner known per se.
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