Phase behavior and heat capacities of the 1-benzyl-3-methylimidazolium ionic liquids
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F16%3A43902522" target="_blank" >RIV/60461373:22340/16:43902522 - isvavai.cz</a>
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S0021961416300374" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0021961416300374</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jct.2016.04.009" target="_blank" >10.1016/j.jct.2016.04.009</a>
Alternative languages
Result language
angličtina
Original language name
Phase behavior and heat capacities of the 1-benzyl-3-methylimidazolium ionic liquids
Original language description
The thermal behavior, solid and liquid heat capacities of the 1-benzyl-3-methylimidazolium, [Bzmim]+, based ionic liquid series with Cl-, PF6 -, BF4 -, CHF2CF2SO3 - and NTf2 - as anions were used to evaluate the effect of the insertion of an aromatic character (benzyl group) and the expected increase of the ?-? interactions as well as the impact in the cation-anion hindrance and charge delocalization in the ionic liquid properties. It was found that the molar liquid heat capacities of [Bzmim][X] are in the same order as the 1-pentyl-3-methylimidazolium, [C5C1im][X] analogs. A good correlation between the molar (solid and liquid) heat capacity and the number of atoms of the anion was found. Two different crystalline forms for [Bzmim][BF4] differing by 10 K in the melting temperature and about 10% in the heat capacity were found. The crystallization behavior, melting temperatures, and enthalpies and entropies of fusion show that the insertion of an aromatic character (benzyl group) in the imidazolium cation leads to a significant and systematic change of the thermophysical properties of the ionic liquids associated with an increase of the glass transition and melting temperatures arising from the additional ?-? interactions. ? 2016 Published by Elsevier Ltd.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BJ - Thermodynamics
OECD FORD branch
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Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Chemical Thermodynamics
ISSN
0021-9614
e-ISSN
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Volume of the periodical
100
Issue of the periodical within the volume
September 2016
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
124-130
UT code for WoS article
000376187200014
EID of the result in the Scopus database
2-s2.0-84964506910