Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 53: Issue 1
The Solubility of n-Alkanes C13H28 to C36H74 and of some Binaries in Various Organic Solvents
Authors:
P.M. Ghogomu University of Yaounde I Department of Inorganic Chemistry, Faculty of Science P.O. Box 812 Yaounde Cameroon P.O. Box 812 Yaounde Cameroon

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Elise Provost École Nationale Supérieure des Industries Chimiques, 1 Laboratoire de Thermodynamique des Séparations rue Grandville BP 451 54001 Nancy Cédex- France rue Grandville BP 451 54001 Nancy Cédex- France

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M. Bouroukba École Nationale Supérieure des Industries Chimiques, 1 Laboratoire de Thermodynamique des Séparations rue Grandville BP 451 54001 Nancy Cédex- France rue Grandville BP 451 54001 Nancy Cédex- France

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M. Dirand École Nationale Supérieure des Industries Chimiques, 1 Laboratoire de Thermodynamique des Séparations rue Grandville BP 451 54001 Nancy Cédex- France rue Grandville BP 451 54001 Nancy Cédex- France

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M. Hoch University of Cincinnati Department of Materials Science and Engineering Cincinnati Ohio 45221-0012 USA Cincinnati Ohio 45221-0012 USA

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Pages:
49–56
Online Publication Date:
03 Nov 2004
Publication Date:
01 May 1998
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1010101822739
Keywords:
enthalphy; entropy; metastable; n-alkane; phase diagram; solubility
Restricted access

Abstract  

The solubility of two n-alkanes in commercial organic liquids, such as diesel fuel and jet fuel represent a problem to industry, because they precipitate in an unpredictable fashion. First we calculated the metastable enthalpy and entropy of fusion of the low temperature forms of the n-alkanes. We analyzed the solubility of alkanes n-C22H46, n-C23H48, n-C24H50 and n-C28H58 in ethylbenzene, m-xylene, n-heptane and gas oil. All systems seem to be close ideal, possibly with a slight positive deviation. We analyzed the solubility at constant temperature of the ternary system solvent C22H46-C24H50, C23H48-C24H50, C13H28-C16H34, C20H42-C22H46, C20H42-C24H50 and C20H42-C28H58, and looked at cloud points in various ternary systems. When the difference in the number of carbon atoms in the two alkanes is small, four or less, a metastable solid solution precipitates from the solvent. If the difference in the number of carbon atoms is six or more, the ‘equilibrium’ phases, or at least phases with low solubility precipitate.

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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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