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The influence of mixed anionic composition of Mg–Al hydrotalcites on the thermal decomposition mechanism based on in situ study

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Abstract

A series of Mg/Al hydrotalcites with tailored content of carbonate and nitrate anions was prepared using precipitation method. A part of the obtained materials was additionally crystallized in hydrothermal conditions. Different hydrotalcite phases or domains may co-exist within one sample obtained at controlled conditions. Decomposition mechanism studied in situ (DRIFT, XRD) was different for the samples with high concentration of interlayer nitrate anions than for carbonate-containing sample. TG-QMS study of hydrothermally treated samples provided more precise data for quantitative description of decomposition steps of Mg/Al hydrotalcites containing different mixtures of nitrate and carbonate anions.

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Authors and Affiliations

  1. Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30 060, Krakow, Poland

    Agnieszka Węgrzyn, Alicja Rafalska-Łasocha & Roman Dziembaj

  2. Regional Laboratory for Physicochemical Analyses and Structural Research, Jagiellonian University, Ingardena 3, 30 060, Krakow, Poland

    Dorota Majda & Roman Dziembaj

  3. Institute of Technical Chemistry, University of Leipzig, Linnéstraße 3, 04103, Leipzig, Germany

    Helmut Papp

Authors
  1. Agnieszka Węgrzyn
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  2. Alicja Rafalska-Łasocha
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  3. Dorota Majda
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  4. Roman Dziembaj
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Correspondence to Agnieszka Węgrzyn.

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Węgrzyn, A., Rafalska-Łasocha, A., Majda, D. et al. The influence of mixed anionic composition of Mg–Al hydrotalcites on the thermal decomposition mechanism based on in situ study. J Therm Anal Calorim 99, 443–457 (2010). https://doi.org/10.1007/s10973-009-0190-5

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  • DOI: https://doi.org/10.1007/s10973-009-0190-5

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