| http://www.w3.org/ns/prov#value | - t least one cation having a valence not more than 3, n represents the valence of M, w is a value greater than about 3 up to 8, and y is a value up to about 9 depending upon the identity of M and the degree of hydration ofthe crystal.The term type X zeolite and type Y zeolite as employed herein shall refer not only to type X structured and type Y structured zeolites containing sodium
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