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Temperature Dependence of the Heat Capacity of Monoethanolamine

  • CHEMICAL THERMODYNAMICS AND THERMOCHEMISTRY
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Abstract

The heat capacity of monoethanolamine (MEA) is measured in the 120–345 K range of temperatures, and changes in the enthalpy, entropy, and reduced Gibbs energy in this range of temperatures are calculated. A significant jump in heat capacity and calculated thermodynamic quantities at 283 K, indicating the melting process, is shown. A jump in the heat capacity at 160 K is observed that is associated with the devitrification of MEA. A change in the temperature dependence in the 200–220 K region is recorded that correlates with the change in the dielectric characteristics of MEA glass in this range of temperatures.

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ACKNOWLEDGMENTS

This work was performed as part of a State Task for the Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, in the field of basic scientific research. It was supported by the Russian Foundation for Basic Research, grant no. 16-03-00897.

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Authors and Affiliations

  1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991, Moscow, Russia

    A. V. Tyurin, I. A. Solonina & M. N. Rodnikova

Authors
  1. A. V. Tyurin
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  2. I. A. Solonina
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  3. M. N. Rodnikova
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Correspondence to M. N. Rodnikova.

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Translated by E. Boltukhina

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Tyurin, A.V., Solonina, I.A. & Rodnikova, M.N. Temperature Dependence of the Heat Capacity of Monoethanolamine. Russ. J. Phys. Chem. 93, 417–420 (2019). https://doi.org/10.1134/S0036024419020286

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