Thermal behaviour of montmorillonite pillared with different metal oxides |
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| Authors: | I Pálinkó I Kiricsi Gy Tasi K Varga |
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| Institution: | 1. Department of Organic Chemistry, József Attila University, Hungary
2. Department of Applied Chemistry, József Attila University, Parts of the Center for Catalysis, Surface and Material Science, Dom tér 8, H-6720, Szeged, Hungary
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| Abstract: | Natural montmorillonite was pillared by various polyhydroxy cations. The resulting pillared layer clays (PILCs) were characterized by X-ray fluorescence, X-ray diffraction (XRD) and infrared (IR) spectroscopies. The thermal behaviour of Al-PILC was investigated in detail by a combonation of XRD, derivatography IR spectroscopy and a comparison to natural montmorillonite is given. It was found that thermal stability of Al-PILC is lower than that of natural montmorillonite. However, heat treatment in the stability region results in significant sintering of natural montmorillonite, while the interlayer spacing of Al-PILC is hardly affected. |
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