Abstract
The mechanochemical solid-state adsorption of the cationic dye crystal violet (CV) by montmorillonite was investigated by XRD and simultaneous DTA-TG. Solid CV was ground with the clay for 5 min and four different varieties of CV mechanochemically treated clay were investigated. X-ray and DTA data were compared with those of CV-montmorillonite obtained from an aqueous suspension. X-ray and DTA studies of a ground mixture and a ground mixture heated at 110°C suggest that the mechanochemical adsorption of organic cations takes place on the external surfaces of the clay. The study of a ground mixture washed with water, and washed with water and acetone reveal that water is essential for the penetration of CV into the interlayer space.
Original language | English |
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Pages (from-to) | 99-112 |
Number of pages | 14 |
Journal | Journal of Thermal Analysis and Calorimetry |
Volume | 67 |
Issue number | 1 |
DOIs | |
State | Published - 2002 |
Keywords
- Crystal violet
- DTA
- Mechanochemical adsorption
- Montmorillonite
- Organo-smectites