CATALYST WITH MESOSTRUKTUR CONTAINING PARTICLES WITHIN THE NANOMETER RANGE

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The invention concerns a heat-stable mesostructured material, for use as heterogeneous catalyst, wherein the mesostructured walls comprise : (a) a mineral matrix; and (b) dispersed within said mineral matrix (a), particles of nanometric dimensions based on at least a rare earth T and on at least a transition element M different from said rare earth. The invention also concerns a method for obtaining such a material.