Influence of co-milling oxide physical properties on the structural changes of natural clinoptilolite zeolites

Zeolites are a family of open-framework aluminosilicate minerals used in many diverse fields, including building materials, agriculture, water treatment, and catalysis. In this study, natural zeolites were mechano-chemically treated by co-milling with corundum cristobalite. The idea behind the study was that high-hardness oxides would cause zeolite to undergo more structural distortion, potentially increasing its reactivity sorption capabilities. Corundum has density 3.95 g/cm3 hardness 9, while cristobalite 2.27 6-7, according Mohs scale. planetary ball mill, 20 wt.% various co-ground for 30 min. grinding media hardened steel balls weight ratio 20:1 between minerals. Raw milled products evaluated using X-ray diffraction, Fourier-transform infrared spectroscopy scanning electron microscopy. It revealed different had minor effect on distortion raw zeolite. Crystallite size reduction amorphization observed high rather than particles. After milling, alone 30.4%, no significant when co-milled Preliminary results Cr(VI) adsorption tests indicate is not preferred method enhance activity