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Density of Ionic Liquids

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Encyclopedia of Ionic Liquids
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Introduction

The experimentally measured densities of ionic liquids are important, since they can be used to develop equations of state, which describe non-ideal behavior of ionic liquids. The density and from it derived volumetric parameters of ionic liquids are required for developing new industrial processes [1]. Density is decreasing with increasing temperature due to increasing kinetic energy, which in turn increases the volume of ions. After linear fitting the parameters a and b for the temperature dependence of density are determined from

$$ \rho =b- aT $$
(1)

in which ρ denotes density and T temperature in Kelvin. In this work the method on how to determine the density of ionic liquids is reported. The main emphasis is put on comparison of the density of ionic liquids based on their structure. Some regularities have been observed in the density of ionic liquids depending on the type [2] and size of the ions [3, 4] and molecular weight of anions [5] and different functional...

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Correspondence to Päivi Mäki-Arvela .

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Mäki-Arvela, P. (2020). Density of Ionic Liquids. In: Zhang, S. (eds) Encyclopedia of Ionic Liquids. Springer, Singapore. https://doi.org/10.1007/978-981-10-6739-6_106-1

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  • DOI: https://doi.org/10.1007/978-981-10-6739-6_106-1

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