Preparation of earth phosphate catalysts from carbonate...

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B01J 27/18 (2006.01) B01J 37/28 (2006.01) C07C 41/03 (2006.01) C08G 65/26 (2006.01)

Patent

CA 2495996

A method is provided for ensuring production of efficient rare earth metal phosphate catalysts for alkoxylation of organic compounds. The method comprises: selecting as a reactant one or more carbonate salts of the one or more rare earth metals; reacting the one or more carbonate salts with a source of phosphate under conditions effective to produce the efficient rare earth metal phosphate catalysts; wherein the efficient rare earth metal phosphate catalysts provide an increased activity for the alkoxylation compared to the activity of substantially the same catalyst produced when one or more salts other than carbonate salts of the rare earth metals are selected as the reactant.

La présente invention concerne un procédé pour assurer la production de catalyseurs de phosphates de métaux de terres rares efficaces pour l'alcoxylation de composés organiques. Le procédé comprend les étapes suivantes: sélection en tant que réactif d'un ou de plusieurs sels de carbonate d'un ou de plusieurs métaux de terres rares; réaction du/des sel(s) de carbonate avec une source de phosphate dans des conditions efficaces pour produire les catalyseurs de phosphates de métaux de terres rares efficaces, les catalyseurs de phosphates de métaux de terres rares efficaces permettant d'obtenir une activité accrue de l'alcoxylation en comparaison avec l'activité du catalyseur sensiblement identique produit lorsqu'un ou plusieurs sels de métaux de terres rares autres que des sels de carbonate sont utilisés comme réactifs.

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