Crystalline molecular sieves having three-dimensional microporous framework structures of MO.sub.2.sup.n, AlO.sub.2, and PO.sub.2 tetrahedral oxide units are disclosed. These molecular sieves have an empirical chemical composition on an anhydrous basis expressed by the formula:...http://www.google.es/patents/US4952384?utm_source=gb-gplus-sharePatente US4952384 - Molecular sieve compositions
