Vrbka, Pavel

Link to this page

Authority KeyName Variants
5218e3ff-99c9-48cd-8906-23122613a9d6
  • Vrbka, Pavel (1)
Projects

Author's Bibliography

Phase transitions in higher-melting imidazolium-based ionic liquids: Experiments and advanced data analysis

Čanji, Maja; Bendova, Magdalena; Bogdanov, Milen G.; Wagner, Zdenek; Zdolšek, Nikola; Quirion, François; Jandová, Věra; Vrbka, Pavel

(2019)

TY  - JOUR
AU  - Čanji, Maja
AU  - Bendova, Magdalena
AU  - Bogdanov, Milen G.
AU  - Wagner, Zdenek
AU  - Zdolšek, Nikola
AU  - Quirion, François
AU  - Jandová, Věra
AU  - Vrbka, Pavel
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8423
AB  - As thermal energy storage becomes an increasingly important topic, good knowledge of properties of phase-change materials (PCM) is essential. Among other properties, a good PCM should show a large enthalpy of melting, reproducible melting/solidification cycles, and long-term thermal stability. Temperatures and enthalpies of fusion should be determined at a possibly large range of conditions to allow for a critical evaluation of the experimental data and assessment of the material application potential. In this work, imidazolium-based ionic liquids (ILs) with long alkyl chain substituents 1-hexadecyl-3-methylimidazolium chloride and 1-hexadecyl-3-methyl-imidazolium saccharinate were studied in view of their possible use as phase-change materials. Differential scanning calorimetry (DSC) and the heat-leak modulus (HLM) methods were used to determine the temperatures and the enthalpies of phase transitions in the studied ILs, enabling us to study the influence of the heating and cooling rates on the measured properties. Enthalpies of fusion near to or larger than 100 J·g−1 were found in the studied ionic liquids, making them promising candidates for thermal energy storage. Peaks corresponding to possible liquid crystalline phases in the DSC traces of 1-hexadecyl-3-methylimidazolium saccharinate were observed, pointing to more complex phase behaviour of the studied ionic liquids. Finally, to critically evaluate the experimental data measured in this work, methods based on mathematical gnostics were used. Repeatability of measurements and the degree of mutual agreement between the methods used in this work could thus be determined. © 2019 Elsevier B.V.
T2  - Journal of Molecular Liquids
T1  - Phase transitions in higher-melting imidazolium-based ionic liquids: Experiments and advanced data analysis
VL  - 292
SP  - 111222
DO  - 10.1016/j.molliq.2019.111222
ER  - 
@article{
author = "Čanji, Maja and Bendova, Magdalena and Bogdanov, Milen G. and Wagner, Zdenek and Zdolšek, Nikola and Quirion, François and Jandová, Věra and Vrbka, Pavel",
year = "2019",
abstract = "As thermal energy storage becomes an increasingly important topic, good knowledge of properties of phase-change materials (PCM) is essential. Among other properties, a good PCM should show a large enthalpy of melting, reproducible melting/solidification cycles, and long-term thermal stability. Temperatures and enthalpies of fusion should be determined at a possibly large range of conditions to allow for a critical evaluation of the experimental data and assessment of the material application potential. In this work, imidazolium-based ionic liquids (ILs) with long alkyl chain substituents 1-hexadecyl-3-methylimidazolium chloride and 1-hexadecyl-3-methyl-imidazolium saccharinate were studied in view of their possible use as phase-change materials. Differential scanning calorimetry (DSC) and the heat-leak modulus (HLM) methods were used to determine the temperatures and the enthalpies of phase transitions in the studied ILs, enabling us to study the influence of the heating and cooling rates on the measured properties. Enthalpies of fusion near to or larger than 100 J·g−1 were found in the studied ionic liquids, making them promising candidates for thermal energy storage. Peaks corresponding to possible liquid crystalline phases in the DSC traces of 1-hexadecyl-3-methylimidazolium saccharinate were observed, pointing to more complex phase behaviour of the studied ionic liquids. Finally, to critically evaluate the experimental data measured in this work, methods based on mathematical gnostics were used. Repeatability of measurements and the degree of mutual agreement between the methods used in this work could thus be determined. © 2019 Elsevier B.V.",
journal = "Journal of Molecular Liquids",
title = "Phase transitions in higher-melting imidazolium-based ionic liquids: Experiments and advanced data analysis",
volume = "292",
pages = "111222",
doi = "10.1016/j.molliq.2019.111222"
}
Čanji, M., Bendova, M., Bogdanov, M. G., Wagner, Z., Zdolšek, N., Quirion, F., Jandová, V.,& Vrbka, P.. (2019). Phase transitions in higher-melting imidazolium-based ionic liquids: Experiments and advanced data analysis. in Journal of Molecular Liquids, 292, 111222.
https://doi.org/10.1016/j.molliq.2019.111222
Čanji M, Bendova M, Bogdanov MG, Wagner Z, Zdolšek N, Quirion F, Jandová V, Vrbka P. Phase transitions in higher-melting imidazolium-based ionic liquids: Experiments and advanced data analysis. in Journal of Molecular Liquids. 2019;292:111222.
doi:10.1016/j.molliq.2019.111222 .
Čanji, Maja, Bendova, Magdalena, Bogdanov, Milen G., Wagner, Zdenek, Zdolšek, Nikola, Quirion, François, Jandová, Věra, Vrbka, Pavel, "Phase transitions in higher-melting imidazolium-based ionic liquids: Experiments and advanced data analysis" in Journal of Molecular Liquids, 292 (2019):111222,
https://doi.org/10.1016/j.molliq.2019.111222 . .
4
3
3