Abstract
The adsorption of crystal violet on laponite was investigated by X-ray diffraction and thermal analysis. DTA, TG and DTG curves were recorded in air. The evolved H2O, CO2, NO2, H2 and C2H6 were simultaneously determined by mass spectrometry. The thermal analysis curves were compared on one hand with the thermal analysis curves of laponite and on the other hand with thermal analysis curves of non-adsorbed crystal violet and of crystal violet adsorbed on montmorillonite. The thermal analysis curves of crystal violet adsorbed on laponite show similarities to the curves of the non-adsorbed crystal violet, but differ from the curves of crystal violet adsorbed on montmorillonite. The differences in the thermal behaviour were attributed to π interactions which do not occur between crystal violet and laponite but do occur between this dye and montmorillonite.
Original language | English |
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Pages (from-to) | 1941-1952 |
Number of pages | 12 |
Journal | Journal of Thermal Analysis |
Volume | 35 |
Issue number | 6 |
DOIs | |
State | Published - Jun 1989 |