High silica faujasite polymorph - CSZ-3 and method of synthesizing
AssigneeW. R. Grace & Co.
InventorsDavid E. W. Vaughan, Michael G. Barrett
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Abstract
A high silica faujasite structure, CSZ-3, has a composition 0.02 to 0.20 Cs.sub.2 O: 0.80 to 0.95 Na.sub.2 O: Al.sub.2 O.sub.3 : 5.0 to 7.0 SiO.sub.2 : 2-10 H.sub.2 O The zeolite has utility in sorption, separation and catalytic applications and it has high hydrothermal stability. It is made by reacting sources of silica, alumina, soda, and cesia together with a nucleating agent in the form of seeds or a seed solution, followed by hot aging at a temperature between 50.degree. and 160.degree. C.
Claims18
A high silica faujasite aluminosilicate having a silica to alumina ratio of between 5.0 and 7.0 and having cesium ions trapped in the sodalite cages.
Dependencies are inferred from the claim text.