Importance of the interlayer orientation in borate-intercalating layered double hydroxides |
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Authors: | Ahmet Nedim Ay |
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Institution: | (1) Chemistry Department, Hacettepe University, Beytepe Campus, 06800 Ankara, Turkey |
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Abstract: | Thermal decomposition kinetics and mechanism of layered double hydroxides (LDHs) intercalating different amounts and types
of borate ions were studied using Coats–Redfern integral and Achar differential methods. The results revealed that the Coats–Redfern
integral method is more appropriate than the Achar differential method for evaluation of the nonisothermal thermogravimetric
decomposition data. The first-order Avrami-Erofe’ev A1 mechanism was found to be the best fitting kinetic model for almost all samples. In addition to the amount and type of the
intercalated borate ion, interlayer orientation was also of importance in determining the chemical and thermal stabilities
and hence the decomposition kinetics of the studied compounds. |
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Keywords: | |
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