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Thermal and Infrared Study of Desorption of Pyridine and Pyridine Derivatives from Ni-exchanged Montmorillonite

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Abstract

Thermal analysis (TG, DTG) and infrared absorption spectra were used to study desorption of pyridine (py), 4-methylpyridine (4-Mepy) and 4-ethylpyridine (4-Etpy) from Ni(II)-exchanged montmorillonite (Ni-MMT). It is shown that the bonds between the derivatives of pyridine (R-py) and the montmorillonite exhibit predominantly Lewis acid character. The thermal stability of studied samples and the total amounts of R-py inserted in the porous structure of Ni-MMT increase in the following sequence: py/Ni-MMT<4-Mepy/Ni-MMT<4-Etpy/Ni-MMT, i. e. the influence of the substituent on the pyridine ring is evident.

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Authors and Affiliations

  1. Department of Inorganic Chemistry, Slovak Academy of Sciences, 842 36, Bratislava, Slovakia

    E. Jóna & M. Kubranová

  2. Department of Chemistry and Technology of Inorganic Materials, Faculty of Industrial Technologies, University of Trenčin, 020 32, Púchov, Slovakia

    E. Jóna & M. Kopcová

  3. Department of Inorganic Chemistry, Slovak Technical University, 812 37, Bratislava, Slovakia

    A. Sirota

Authors
  1. E. Jóna
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  2. M. Kubranová
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  3. A. Sirota
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  4. M. Kopcová
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Jóna, E., Kubranová, M., Sirota, A. et al. Thermal and Infrared Study of Desorption of Pyridine and Pyridine Derivatives from Ni-exchanged Montmorillonite. Journal of Thermal Analysis and Calorimetry 63, 807–813 (2001). https://doi.org/10.1023/A:1010104523953

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  • DOI: https://doi.org/10.1023/A:1010104523953

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