Crystalline aluminosilicate zeolitic composition: UZM-4M

   
   

Applicants have synthesized a new crystalline aluminosilicate zeolite identified as UZM-4M. This new zeolite is obtained by treating a UZM-4 zeolite with a fluorosilicate salt to obtain a zeolite having the empirical formula: M1.sub.a.sup.n+ Al.sub.1-x E.sub.x Si.sub.y O.sub.z where 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 about 10.

Os pretendentes synthesized um zeolite cristalino novo do aluminosilicate identificado como UZM-4M. Este zeolite novo é obtido tratando um zeolite UZM-4 com um sal do fluorosilicate para obter um zeolite que tem a fórmula empírica: M1.sub.a.sup.n+ Al.sub.1-x E.sub.x Si.sub.y O.sub.z onde M1 é um metal da terra alcalina, alcalina-térreo, rara, um íon do hydronium ou um íon do ammonium, E pode ser gallium, ferro, boro, indium e misturas disso e tem uma relação de Si/Al de 1.5 a aproximadamente 10.

 
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