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The powder X-ray diffraction (pXRD) patterns of (a) raw zeolite (RZ), (b) zeolite thermally treated at 450 °C, (c) zeolite thermally treated at 500 °C, (d) zeolite thermally treated at 600 °C, (e) zeolite thermally treated at 750 °C, and (f) zeolite thermally treated at 800 °C. Note: clinoptilolite, C; muscovite, Ms; quartz, Q; montmorillonite, Mt; cristobalite, Cr; albite, A.
