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Infrared spectroscopy in the far (FIR), mid (MIR), and near (NIR) regions was used to study the structural changes of a thermally treated clay mineral montmorillonite saturated with Li + or Cu 2+ cations (Li-JP and Cu-JP samples). Cation exchange capacity (CEC) values decreased by 89 and 64% in Li- and Cu-samples, respectively, heated at 300°C. The IR spectra confirm that the charge...
The adsorption of 2-, 3- and 4-pyridinecarboxamide (PYCA) on montmorillonite and saponite has been investigated using FT-IR spectrometry. The intercalation of 2-, 3- or 4-pyridinecarboxamide within montmorillonite or saponite has been shown by X-ray diffraction to increase the interlayer spacings. PYCA interacted with clays by direct or indirect coordination (through water molecules) to the exchangeable...
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