Calcination method: the dip or crude antimony pentoxide is dissolved in a mixture of nitric acid and hydrofluoric acid to form fluoroantimonic acid, and the mixture is extracted with a mixture of a strong acid and a methyl isobutyl ketone organic phase, and then subjected to stripping, using ammonia water and Fluoric acid reacts to form cerium hydroxide precipitate, which is then washed, dried и изгорен, за да се получи рафиниран церей оксид.
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