Phase behaviour and heat capacities of selected 1-ethyl-3-methylimidazolium-based ionic liquids

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F20%3A43919921" target="_blank" >RIV/60461373:22340/20:43919921 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/20:00537800

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0021961419308705" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0021961419308705</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jct.2019.106020" target="_blank" >10.1016/j.jct.2019.106020</a>

Result language

angličtina

Original language name

Phase behaviour and heat capacities of selected 1-ethyl-3-methylimidazolium-based ionic liquids

Original language description

Ionic liquids start to leave the position of novel and astonishing compounds and become commercially available in a relatively high purity. Consequently, their thermodynamic properties should be described in a more thorough way than in the times of first pioneering studies revealing the importance of the water content. Available thermodynamic data, however, contradict this assumption keeping large discrepancies even among the data published in the most recent papers. Eight common ionic liquids based on the 1-ethyl-3-methylimidazolium cation, [C1C2Im], which are coupled with simple organic or inorganic anions are selected in this work and their phase behaviour, heat capacities, and crystal structures are studied. Special attention is paid to drying of the samples and evaluation of the effect of water content on the melting temperature. Resulting melting temperatures, fusion enthalpies, and heat capacities are compared to the available literature data. For the compounds, which melt above the room temperature, crystal structures were determined using the X-ray powder diffraction experiments to identify the studied crystalline phases. The thermodynamic and crystallographic data were used simultaneously to interpret the polymorphism of the investigated ionic liquids, where it occurred. Moreover, a crystal structure for the dimethyl phosphate salt [C1C2Im][Me2PO4] is reported for the first time.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10403 - Physical chemistry

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Chemical Thermodynamics

ISSN

0021-9614

e-ISSN

—

Volume of the periodical

142

Issue of the periodical within the volume

January

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

106020

UT code for WoS article

000505772900024

EID of the result in the Scopus database

2-s2.0-85076632676