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Organic sol comprising at least one oxygenated rare-earth compound, synthesis method therefor, and use of said sol for catalysis
Organic sol comprising at least one oxygenated rare-earth compound, synthesis method therefor, and use of said sol for catalysis
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机译:包含至少一种氧化的稀土化合物的有机溶胶,其合成方法以及所述溶胶在催化中的用途
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摘要
A method for processing soot containing one or more rare earths, wherein said soot is contacted with an oxygen-containing gas, is disclosed. The method comprises (a) preparing an aqueous phase comprising a dispersion of at least one oxygenated metal compound; (b) simultaneously or consecutively contacting a suspension from step (a) with an organic phase including at least one amphiphilic agent and preferably an organic mixture or compound as the solvent; and c recovering the organic phase. Said oxygenated metal compound is produced by means of a method according to which a solution including at least one soluble rare-earth salt, usually an acetate and/or a chloride, is prepared; the solution is contacted with a basic medium and the resulting reaction mixture is maintained at a basic pH; and the precipitate formed by atomization or freeze-drying is recovered. Said method is useful in inorganic synthesis and catalysis.
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