| http://www.w3.org/ns/prov#value | - Zeolite composition can be represented by the following formula: M2/nO:Al2O3:xSiO2:yH2O, wherein M is a cation of valence n, x is greater than or equal to 2, and y is a number determined by the porosity and the hydration state of the zeolites, generally from 0 to 8.
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