Title: Catalyst and method of preparing same

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Abstract: New catalyst for hydrocarbon conversion of organic feedstocks and method of preparing such catalyst. Catalyst is a composite made up of an inorganic oxide, wherein at least 50 weight percent of said inorganic oxide is silica and/or alumina, said matrix having dispersed therein a particulate crystalline aluminosilicate carrying rare earth cations, said composite catalyst having rare earth impregnated therein in an amount of from about 1 to 6 percent by weight (expressed as RE.sub.2 O.sub.3), this amount being over and above the rare earth level attainable by ion exchange alone. impregnated rare earth may be incorporated into the catalyst by impregnating the composite with a rare earth-containing solution and then removing excess solution and drying, by impregnating the matrix with rare earth and then admixing the matrix with rare earth-exchanged crystalline aluminosilicate, or by impregnating rare earth-exchanged crystalline aluminosilicate with rare earth and then admixing the resultant rare earth-exchanged and impregnated crystalline aluminosilicate, preferably in the absence of any intermediate washing, with the matrix.


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