Binary mixtures of n-heptane and water: isochoric heat capacity near temperatures of liquid - liquid and liquid - vapour phase transition

We have measured the heat capacity of the fast ion conductor PbSnF4 at 10.3 < T < 352 K by adiabatic calorimetry. Our results show anomalous values in the Cp,m in the region 300 < T < 352 K. These are associated with the α–β crystallographic transition reported at 353 K. Because the upper temperature limit of our cryostat is around 354 K, it was impossible to follow the phase transition to completion. A more subtle anomaly in the Cp,m was detected between 130 and 160 K. Standard molar thermodynamic functions are presented at selected temperatures from 5 to 350 K.

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Density and Heat Capacity as a Function of Temperature for Binary Mixtures of 1-Butyl-3-methylpyridinium Tetrafluoroborate + Water, + Ethanol, and + Nitromethane

Journal of Chemical & Engineering Data ◽

10.1021/je7002836 ◽

2007 ◽

Vol 52 (6) ◽

pp. 2261-2265 ◽

Cited By ~ 47

Author(s):

Gonzalo García-Miaja ◽

Jacobo Troncoso ◽

Luis Romaní

Keyword(s):

Heat Capacity ◽

Binary Mixtures

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Heat capacity of PMN near an electric-field-induced phase transition

JETP Letters ◽

10.1134/s0021364007060045 ◽

2007 ◽

Vol 85 (6) ◽

pp. 283-285 ◽

Cited By ~ 2

Author(s):

M. V. Gorev ◽

V. S. Bondarev ◽

K. S. Aleksandrov

Keyword(s):

Phase Transition ◽

Heat Capacity ◽

Electric Field

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Isothermal compressibility, isochoric heat capacity, and intrinsic pressure of KCl-NdCl3 melts

Russian Metallurgy (Metally) ◽

10.1134/s0036029510020138 ◽

2010 ◽

Vol 2010 (2) ◽

pp. 146-149 ◽

Cited By ~ 1

Author(s):

V. I. Minchenko ◽

I. V. Korzun ◽

V. A. Khokhlov ◽

V. N. Dokutovich

Keyword(s):

Heat Capacity ◽

Isothermal Compressibility ◽

Isochoric Heat Capacity

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Heat Capacity in α-β Phase Transition of Quartz

Journal of the Physical Society of Japan ◽

10.1143/jpsj.54.625 ◽

1985 ◽

Vol 54 (2) ◽

pp. 625-629 ◽

Cited By ~ 29

Author(s):

Masahide Matsuura ◽

Haruhiko Yao ◽

Kazutoshi Gouhara ◽

Ichiro Hatta ◽

Norio Kato

Keyword(s):

Phase Transition ◽

Heat Capacity ◽

Β Phase

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Theory of gas–gas phase transition in rare‐gas binary mixtures

The Journal of Chemical Physics ◽

10.1063/1.472070 ◽

1996 ◽

Vol 105 (5) ◽

pp. 2020-2027 ◽

Cited By ~ 4

Author(s):

Lidia Strigari ◽

Mauro Rovere ◽

Bruno D’Aguanno

Keyword(s):

Phase Transition ◽

Gas Phase ◽

Binary Mixtures ◽

Rare Gas

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The Influence of the Nature of Redox-Active Moieties on the Properties of Redox-Active Ionic Liquids and on Their Use as Electrolyte for Supercapacitors

Energies ◽

10.3390/en14196344 ◽

2021 ◽

Vol 14 (19) ◽

pp. 6344

Author(s):

Philipp S. Borchers ◽

Patrick Gerlach ◽

Yihan Liu ◽

Martin D. Hager ◽

Andrea Balducci ◽

...

Keyword(s):

Phase Transition ◽

Differential Scanning Calorimetry ◽

Ionic Liquid ◽

Ionic Liquids ◽

Binary Mixtures ◽

Thermal Characteristics ◽

The Other ◽

Scanning Calorimetry ◽

Imidazolium Ionic Liquids ◽

Redox Active

In this work, two new redox-active ionic liquids, one based on 2,2,6,6-tetramethylpiperidine-N-oxide and the other based on 4,4′-bipyridine, are synthesized and characterized. A ferrocene-based redox-active ionic liquid is used for referencing the results. All ionic liquids are formed via salt-metathesis from halogenate to bis(trifluoromethylsulfonyl)imide. Their fundamental thermal characteristics are assessed with differential scanning calorimetry. While the imidazolium ionic liquids show no melting point, the phase transition is well observable for the viologen-based ionic liquid. The properties of the neat redox-active ionic liquids and of binary mixtures containing these ionic liquids (0.1 m) and 1-butyl-1-methyl pyrrolidinium-bis(trifluoromethylsulfonyl)imide have been investigated. Finally, the use of these binary mixtures in combination with activated carbon-based electrodes has been considered in view of the use of these redox-active electrolytes in supercapacitors.

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