Dipoláris folyadékok és folyadékelegyek relatív permittivitása

Elméleti és kísérleti eredmények összehasonlitása

Translated title of the contribution: Relative permittivity of dipolar liquids and their mixtures. Comparison of theory and experiment

Mónika Valiskó, D. Boda, J. Liszi, I. Szalai

Research output: Contribution to journalArticle

Abstract

An empirical extension, based on the Kirkwood-Fröhlich equation, of a molecular based second order perturbation theory is proposed to calculate the relative permittivity of dipolar liquids and mixtures in terms of the molecular dipole moment, the refractive index, density and temperature. Using the resulting equation, and giving an estimation for the dipole moments of the pure components, good agreement is obtained between the theoretical and experimental results for the relative permittivity of mixtures of carbonyl compounds with aprotic liquids. We show that our extension of the Kirkwood-Frohlich equation describes the dielectric properties of mixtures more accurately than the original equation.

Original languageHungarian
Pages (from-to)517-523
Number of pages7
JournalMagyar Kemiai Folyoirat, Kemiai Kozlemenyek
Volume108
Issue number12
Publication statusPublished - Dec 2002

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Permittivity
Dipole moment
Liquids
Carbonyl compounds
Experiments
Dielectric properties
Refractive index
Temperature

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

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title = "Dipol{\'a}ris folyad{\'e}kok {\'e}s folyad{\'e}kelegyek relat{\'i}v permittivit{\'a}sa: Elm{\'e}leti {\'e}s k{\'i}s{\'e}rleti eredm{\'e}nyek {\"o}sszehasonlit{\'a}sa",
abstract = "An empirical extension, based on the Kirkwood-Fr{\"o}hlich equation, of a molecular based second order perturbation theory is proposed to calculate the relative permittivity of dipolar liquids and mixtures in terms of the molecular dipole moment, the refractive index, density and temperature. Using the resulting equation, and giving an estimation for the dipole moments of the pure components, good agreement is obtained between the theoretical and experimental results for the relative permittivity of mixtures of carbonyl compounds with aprotic liquids. We show that our extension of the Kirkwood-Frohlich equation describes the dielectric properties of mixtures more accurately than the original equation.",
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T1 - Dipoláris folyadékok és folyadékelegyek relatív permittivitása

T2 - Elméleti és kísérleti eredmények összehasonlitása

AU - Valiskó, Mónika

AU - Boda, D.

AU - Liszi, J.

AU - Szalai, I.

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