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Metastable eutectic melting in the NaCl-H2O system. / Drebushchak, V. A.; Ogienko, A. G.; Yunoshev, A. S.

In: Thermochimica Acta, Vol. 647, 10.01.2017, p. 94-100.

Research output: Contribution to journal › Article › peer-review

Harvard

Drebushchak, VA, Ogienko, AG & Yunoshev, AS 2017, 'Metastable eutectic melting in the NaCl-H2O system', Thermochimica Acta, vol. 647, pp. 94-100. https://doi.org/10.1016/j.tca.2016.12.004

APA

Drebushchak, V. A., Ogienko, A. G., & Yunoshev, A. S. (2017). Metastable eutectic melting in the NaCl-H2O system. Thermochimica Acta, 647, 94-100. https://doi.org/10.1016/j.tca.2016.12.004

Vancouver

Drebushchak VA, Ogienko AG, Yunoshev AS. Metastable eutectic melting in the NaCl-H2O system. Thermochimica Acta. 2017 Jan 10;647:94-100. doi: 10.1016/j.tca.2016.12.004

Author

Drebushchak, V. A. ; Ogienko, A. G. ; Yunoshev, A. S. / Metastable eutectic melting in the NaCl-H2O system. In: Thermochimica Acta. 2017 ; Vol. 647. pp. 94-100.

BibTeX

@article{8f2e465d0f724709ab90a843f84f59a5,
title = "Metastable eutectic melting in the NaCl-H2O system",
abstract = "Metastable eutectic melting of solid mixture NaCl + H2O was measured in a wide range of its compositions by using a DSC. The new eutectic melting was found to occur near −27 °C, below the well know ice-NaCl∙2H2O eutectic point (−21.1 °C, 23.3 wt.%) of equilibrium both phase diagram. The new low-temperature eutectic was detected for all samples, in two-phase regions, Н2О-NaCl∙2H2O and NaCl∙2H2O-NaCl. The new eutectic temperature is close to the value of ∼−28 °C reported by Roedder (1984) for the mixture of solid H2O and NaCl, which was never repeated or reaffirmed independently since then. The heat effect of the metastable eutectic melting did allow us to estimate the enthalpy of formation of hydrohalite from salt and ice: NaCl(cr) + 2H2O(cr) = NaCl∙2H2O(cr) + ΔH (= −0.73 ± 0.07 kJ mol−1).",
keywords = "DSC, Eutectic, Hydrohalite, Metastable, NaCl-HO system, NaCl-H2O system, SURFACE ENTHALPIES, STABILITY, NACL-KCL-H2O, ENERGETICS, BINARY, WATER",
author = "Drebushchak, {V. A.} and Ogienko, {A. G.} and Yunoshev, {A. S.}",
year = "2017",
month = jan,
day = "10",
doi = "10.1016/j.tca.2016.12.004",
language = "English",
volume = "647",
pages = "94--100",
journal = "Thermochimica Acta",
issn = "0040-6031",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Metastable eutectic melting in the NaCl-H2O system

AU - Drebushchak, V. A.

AU - Ogienko, A. G.

AU - Yunoshev, A. S.

PY - 2017/1/10

Y1 - 2017/1/10

N2 - Metastable eutectic melting of solid mixture NaCl + H2O was measured in a wide range of its compositions by using a DSC. The new eutectic melting was found to occur near −27 °C, below the well know ice-NaCl∙2H2O eutectic point (−21.1 °C, 23.3 wt.%) of equilibrium both phase diagram. The new low-temperature eutectic was detected for all samples, in two-phase regions, Н2О-NaCl∙2H2O and NaCl∙2H2O-NaCl. The new eutectic temperature is close to the value of ∼−28 °C reported by Roedder (1984) for the mixture of solid H2O and NaCl, which was never repeated or reaffirmed independently since then. The heat effect of the metastable eutectic melting did allow us to estimate the enthalpy of formation of hydrohalite from salt and ice: NaCl(cr) + 2H2O(cr) = NaCl∙2H2O(cr) + ΔH (= −0.73 ± 0.07 kJ mol−1).

AB - Metastable eutectic melting of solid mixture NaCl + H2O was measured in a wide range of its compositions by using a DSC. The new eutectic melting was found to occur near −27 °C, below the well know ice-NaCl∙2H2O eutectic point (−21.1 °C, 23.3 wt.%) of equilibrium both phase diagram. The new low-temperature eutectic was detected for all samples, in two-phase regions, Н2О-NaCl∙2H2O and NaCl∙2H2O-NaCl. The new eutectic temperature is close to the value of ∼−28 °C reported by Roedder (1984) for the mixture of solid H2O and NaCl, which was never repeated or reaffirmed independently since then. The heat effect of the metastable eutectic melting did allow us to estimate the enthalpy of formation of hydrohalite from salt and ice: NaCl(cr) + 2H2O(cr) = NaCl∙2H2O(cr) + ΔH (= −0.73 ± 0.07 kJ mol−1).

KW - DSC

KW - Eutectic

KW - Hydrohalite

KW - Metastable

KW - NaCl-HO system

KW - NaCl-H2O system

KW - SURFACE ENTHALPIES

KW - STABILITY

KW - NACL-KCL-H2O

KW - ENERGETICS

KW - BINARY

KW - WATER

UR - http://www.scopus.com/inward/record.url?scp=85006100048&partnerID=8YFLogxK

U2 - 10.1016/j.tca.2016.12.004

DO - 10.1016/j.tca.2016.12.004

M3 - Article

AN - SCOPUS:85006100048

VL - 647

SP - 94

EP - 100

JO - Thermochimica Acta

JF - Thermochimica Acta

SN - 0040-6031

ER -

ID: 10319957