Process for preparing double rare earth and ammonium double...

Details Process for preparing double rare earth and ammonium double... Process for preparing double rare earth and ammonium double...

C - Chemistry, Metallurgy

01

F

C01F 17/00 (2006.01) C01F 1/00 (2006.01) C07C 51/41 (2006.01) C07C 55/07 (2006.01) C07F 5/00 (2006.01)

Patent

CA 2041755

La présente invention concerne un procédé de préparation d'un oxalate double d'ammonium et de terres rares. Ce procédé consiste à ajouter dans une solution contenant des ions oxalate et ammonium, une seconde solution contenant un composé de terres rares, par exemple un nitrate d'yttrium. L'oxalate double récupéré après séchage éventuel est calciné pour donner un oxyde d'yttrium de morphologie déterminé et convenable pour une utilisation de cet oxyde dans la fabrication de composés luminescents.

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