Montmorillonite treated with Rhodamine-6G mechanochemically and in aqueous suspensions

摘要: The mechanochemical solid-state adsorption of the cationic dye rhodamine-6G (R6G) by montmorillonite was investigated XRD and simultaneous DTA-TG. Five different mixtures R6G were investigated. They contained 10, 20, 35, 50 100 mmol per g clay. solid ground with clay for five minutes. Mixtures both in absence water (dry grinding) adding drops periodically, (wet grinding). There no differences between samples obtained wet or dry grinding. X-ray DTA data compared those R6G-montmorillonite from aqueous suspensions. products studies suggest that organic cations takes place on external surfaces whereas suspensions into interlayer space. In latter case final stages oxidation occur temperatures higher than neat former they at lower temperatures.