Rare earth or gallium additive composition, methods for...

C - Chemistry – Metallurgy – 01 – F

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C01F 17/00 (2006.01) B01J 31/04 (2006.01) B01J 31/12 (2006.01) B01J 31/22 (2006.01) C07F 5/00 (2006.01) C08F 4/54 (2006.01) C08F 36/04 (2006.01)

Patent

CA 2424925

The additive compound of a carboxylic acid and a halide or of a rare earth or gallium halogenocarboxylate of the same acid is obtained by a method which consists in reacting with HX, X representing a halogen, and in a solvent selected among alkanes, cyclanes and aromatic solvents and their mixtures, a rare earth or gallium carboxylate, the reaction being carried out with an X/rare earth or gallium atomic ratio less than 3 when preparing a halogenocarboxylate. The second method of the invention concerns the preparation of an additive anhydrous compound of a rare earth or gallium halide and a nitrogen- or oxygen-donor compound which consists in preparing an additive compound of a carboxylic acid and a rare earth halide of the above type and in adding to the medium obtained a nitrogen- or oxygen-donor.

Le composé d'addition d'un acide carboxylique et d'un halogénure ou d'un halogénocarboxylate de terre rare ou de gallium du même acide est obtenu par un procédé dans lequel on fait réagir avec HX, X désignant un halogène, et dans un solvant choisi parmi les alcanes, les cyclanes et les solvants aromatiques et leurs mélanges, un carboxylate de terre rare ou de gallium, la réaction étant réalisée avec un rapport atomique X/terre rare ou gallium inférieur à 3 dans le cas de la préparation d'un halogénocarboxylate. Le second procédé de l'invention concerne la préparation d'un composé anhydre d'addition d'un halogénure de terre rare ou de gallium et d'un composé donneur d'azote ou d'oxygène dans lequel on prépare un composé d'addition d'un acide carboxylique et d'un halogénure de terre rare du type précédent et on ajoute au milieu obtenu un donneur d'azote ou d'oxygène.

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