"CRYSTALLINE ALUMINOSILICATE ZEOLITIC COMPOSITION : UZM-4M"

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A crystalline aluminosilicate zeolite identified as UZM-4M has been synthesized. This zeolite is obtained by treating a UZM-4 zeolite with a fluorosilicate salt to obtain a zeolite having the empirical formula : M1an+Al1-xExSiyOzwhere M1 is an alkali metal, alkaline earth metal, rare earth metal, hydronium ion or ammonium ion, E can be gallium, iron, boron, indium and mixtures thereof and has a Si/Al ratio of 1.5 to 10.