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Thermoanalytical Study of O,O'-dibenzoyl-(2R, 3R)-Tartaric Acid SMC

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Abstract

A non-isothermal experimental study using thermogravimetry (TG) and differential scanning calorimetry (DSC) was conducted for investigation the oxidation reactivity of natural phosphate and its demineralised products. The analyses were carried out in oxygen atmosphere and at different heating rate (5, 10, 20, 30, 50, 60°C min-1) up to 1000°C. The results indicated that the material washed with HCl from the original phosphate, mainly apatite and carbonates of calcium and magnesium, as well as with HCl/HF, silicates minreals, had an inhibition effect during oxidation reactions of organic material. The increase of the heating rate shifted the reactions to higher temperatures. In addition, kinetic parameters were determined by assuming a single first-order kinetic model, using the Coats-Redfern method. The influences of demineralization process of natural phosphate and the heating rate were examined and discussed.

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Authors and Affiliations

  1. Department of Organic Chemical Technology, Budapest University of Technology and Economics, Budapest, Műegyetem rkp. 3, P.O. Box 91, H-1521, Hungary

    H. Simon, Z. Vincze, E. Fogassy & D. Kozma

  2. Research Group for Technical Analytical Chemistry, Hungarian Academy of Sciences, Budapest University of Technology and Economics, Budapest, Szt. Gellért tér 4, H-1521, Hungary

    K. Marthi

  3. Institute of General and Analytical Chemistry, Budapest University of Technology and Economics, Budapest, Szt. Gellért tér 4, H-1521, Hungary

    G. Lévai & G. Pokol

Authors
  1. H. Simon
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  2. Z. Vincze
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  3. K. Marthi
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  4. G. Lévai
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  5. G. Pokol
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  6. E. Fogassy
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  7. D. Kozma
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Corresponding author

Correspondence to D. Kozma.

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Simon, H., Vincze, Z., Marthi, K. et al. Thermoanalytical Study of O,O'-dibenzoyl-(2R, 3R)-Tartaric Acid SMC. Journal of Thermal Analysis and Calorimetry 75, 787–793 (2004). https://doi.org/10.1023/B:JTAN.0000027175.51971.df

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  • DOI: https://doi.org/10.1023/B:JTAN.0000027175.51971.df

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