Patent ID: 6136069
Filing Date: 2000-10-24
Classification: B01D,B01J,C01B,Y10S

Abstract:
A method of separating a more strongly adsorbable component from one or more less strongly adsorbable components residing in a gaseous mixture comprising contacting the gaseous mixture at elevated pressure with a composition and adsorbing said more strongly adsorbed gas specie on the composition wherein the composition is represented by the formulaM.sup.n+.sub.(2x+y)/n [Si.sub.(2-x-y) Al.sub.(y) Zn.sub.(x) ]O.sub.4 ;whereinM is a cation selected from Groups 1, 2, 7, 10, 11, 12 and the f Block elements as defined by thePeriodic 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 a value greater than or equal to 0.98; and2x+y is greater than or equal to 0.80wherein the composition of matter has a FAU structure and zinc resides in tetrahedral positions in the framework of the FAU structure.