Patent ID: 6103214
Filing Date: 2000-08-15
Classification: B01D,B01J,C01B,Y10S

Abstract:
A composition of matter represented by the formulaM.sup.n+.sub.z/n [Si.sub.(2-x-y) Al.sub.(y) Zn.sub.(x) ]O.sub.4 .multidot..cndot.wH.sub.2 OwhereinM is a cation selected from Groups 1, 2, 7, 10, 11, 12 and the f block elements as defined by the Periodic Table of the elements as adopted by IUPAC;n is the valence of the selected cation, M;x is greater than or equal to 0.02 but less than or equal to 1;y is less than or equal to 0.98;z>0.54; andw ranges from 0 to about 8;provided that when z.gtoreq.0.80, then 2x+y does not equal z;which composition of matter has the FAU structure with zinc residing in tetrahedral positions in the framework of the FAU structure;and whereupon such composition of matter is converted to a hydrated sodium form, the hydrated sodium form of the composition of matter exhibits a lattice constant (a.sub.0)wherein ##EQU4## where R represents the Si/Al molar ratio of the composition of matter.