Method of separating cerium from rare earth compounds

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The present invention relates to a method for separating cerium from a rare earth compound, and more specifically, to a method including the steps of : preparing a compound containing lanthanum and cerium; selectively oxidizing cerium in the compound; and leaching the compound to separate cerium from the compound.(AA) Rare earth compound(BB) Acid solution(CC) Light rare earth/heavy rare earth separation(DD) La-Ce/Pr-Nd separation(EE) Heavy rare earth compound(FF) Pr-Nd compound(GG) La-Ce compound(HH) Oxidation and leaching(II) La compound(JJ) Ce compoundCOPYRIGHT KIPO 2014