Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 87: Issue 1
Rubidium and lithium butanoates binary phase diagram
Formation of a stable lyotropic liquid crystal phase and two mixed salts
Authors:
F. Martínez Casado Universidad Complutense Departamento Química Física I, Facultad de Ciencias Químicas Madrid Spain 28040 Madrid Spain 28040

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M. Ramos Riesco Universidad Complutense Departamento Química Física I, Facultad de Ciencias Químicas Madrid Spain 28040 Madrid Spain 28040

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J. Cheda Universidad Complutense Departamento Química Física I, Facultad de Ciencias Químicas Madrid Spain 28040 Madrid Spain 28040

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Pages:
73–77
Online Publication Date:
07 Feb 2007
Publication Date:
01 Jan 2007
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-006-7819-4
Keywords:
binary phase diagram; eutectic and peritectic points; lithium butanoate; lyotropic liquid crystal; mixed salts; rubidium butanoate
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Abstract  

The temperature and enthalpy vs. composition diagrams of the binary system [xC3H7CO2Li+(1–x)C3H7CO2Rb], where x=mole fraction, were determined by differential scanning calorimetry (DSC). This binary systems displays the formation of two mixed salts with a composition 1:1 and 1:2, which melt incongruently at Tfus=590.5 K, with ΔfusHm=11.6 kJ mol–1, and congruently at Tfus=614.5 K, with ΔfusHm=20.2 kJ mol–1, respectively. The phase diagram also presents an ionic liquid-crystalline phase in a wide temperature range: 95 K.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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