Calorimetric measurement of molar excess enthalpies of dilute solutions of ethylbenzene + higher n -alkanes
Identifieur interne : 001665 ( Istex/Corpus ); précédent : 001664; suivant : 001666Calorimetric measurement of molar excess enthalpies of dilute solutions of ethylbenzene + higher n -alkanes
Auteurs : P. M. Ghogomu ; M. Bouroukba ; J. Dellacherie ; D. Balesdent ; M. DirandSource :
- Thermochimica Acta [ 0040-6031 ] ; 1997.
English descriptors
- KwdEn :
- Acta, Analytical expression, Balesdent, Bouroukba, Carbon atom, Carbon atoms, Constant composition, Diaz pena, Different temperatures, Dirand, Enthalpy, Ethylbenzene, Excess enthalpies, Experimental cell, Fluid phase equilibria, Ghogomu, Infinite dilution, Literature values, Molar, Mole fraction, Paraffin, Partial molar, Reference cell, Relative deviation, Simple expression, Solution chemistry, Thermochimica acta.
- Teeft :
- Acta, Analytical expression, Balesdent, Bouroukba, Carbon atom, Carbon atoms, Constant composition, Diaz pena, Different temperatures, Dirand, Enthalpy, Ethylbenzene, Excess enthalpies, Experimental cell, Fluid phase equilibria, Ghogomu, Infinite dilution, Literature values, Molar, Mole fraction, Paraffin, Partial molar, Reference cell, Relative deviation, Simple expression, Solution chemistry, Thermochimica acta.
Abstract
Abstract: Flow calorimetry has been used to measure the excess enthalpies (heats of mixing) of dilute solutions of higher n-alkanes (hexadecane to pentacosane) in ethylbenzene. The results show that at constant temperature and composition, hE increases with the number of carbon atoms in the n-alkane molecule. Also, for each alkane, hE decreases with increasing temperature, at constant composition. A simple analytical expression is used to represent the variation of hE with carbon number n, composition x, and temperature T in the domain (16 ≤ n ≤ 25; x ≤ 0.15; 298.15 ≤ T ≤ 330.00).
Url:
DOI: 10.1016/S0040-6031(97)00235-9
Links to Exploration step
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<front><div type="abstract" xml:lang="en">Abstract: Flow calorimetry has been used to measure the excess enthalpies (heats of mixing) of dilute solutions of higher n-alkanes (hexadecane to pentacosane) in ethylbenzene. The results show that at constant temperature and composition, hE increases with the number of carbon atoms in the n-alkane molecule. Also, for each alkane, hE decreases with increasing temperature, at constant composition. A simple analytical expression is used to represent the variation of hE with carbon number n, composition x, and temperature T in the domain (16 ≤ n ≤ 25; x ≤ 0.15; 298.15 ≤ T ≤ 330.00).</div>
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<ce:e-address>mdirand@ensic.u-nancy.fr</ce:e-address>
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<ce:affiliation id="AFF1"><ce:label>a</ce:label>
<ce:textfn>Department of Inorganic Chemistry, Faculty of Science, University of Yaounde I, P.O. Box 812, Yaounde, Cameroon</ce:textfn>
</ce:affiliation>
<ce:affiliation id="AFF2"><ce:label>b</ce:label>
<ce:textfn>Ecole Nationale Supérieure des Industries Chimiques (INPL), Laboratoire de Thermodynamique des Séparations I Rue Grandville, B.P. 451, 54001 Nancy, France</ce:textfn>
</ce:affiliation>
<ce:correspondence id="COR1"><ce:label>∗</ce:label>
<ce:text>Corresponding author. Fax: (33) 03 83.35.08.11</ce:text>
</ce:correspondence>
</ce:author-group>
<ce:date-received day="7" month="11" year="1996"></ce:date-received>
<ce:date-accepted day="29" month="5" year="1997"></ce:date-accepted>
<ce:abstract><ce:section-title>Abstract</ce:section-title>
<ce:abstract-sec><ce:simple-para>Flow calorimetry has been used to measure the excess enthalpies (heats of mixing) of dilute solutions of higher <ce:italic>n</ce:italic>
-alkanes (hexadecane to pentacosane) in ethylbenzene. The results show that at constant temperature and composition, <ce:italic>h</ce:italic>
<ce:sup>E</ce:sup>
increases with the number of carbon atoms in the <ce:italic>n</ce:italic>
-alkane molecule. Also, for each alkane, <ce:italic>h</ce:italic>
<ce:sup>E</ce:sup>
decreases with increasing temperature, at constant composition.</ce:simple-para>
<ce:simple-para>A simple analytical expression is used to represent the variation of <ce:italic>h</ce:italic>
<ce:sup>E</ce:sup>
with carbon number <ce:italic>n</ce:italic>
, composition <ce:italic>x</ce:italic>
, and temperature <ce:italic>T</ce:italic>
in the domain (16 ≤ <ce:italic>n</ce:italic>
≤ 25; <ce:italic>x</ce:italic>
≤ 0.15; 298.15 ≤ <ce:italic>T</ce:italic>
≤ 330.00).</ce:simple-para>
</ce:abstract-sec>
</ce:abstract>
<ce:keywords><ce:section-title>Keywords</ce:section-title>
<ce:keyword><ce:text>Excess thermodynamic properties</ce:text>
</ce:keyword>
<ce:keyword><ce:text><ce:italic>n</ce:italic>
-alkanes</ce:text>
</ce:keyword>
<ce:keyword><ce:text>Solvent</ce:text>
</ce:keyword>
<ce:keyword><ce:text>Crystallization</ce:text>
</ce:keyword>
<ce:keyword><ce:text>Wax</ce:text>
</ce:keyword>
<ce:keyword><ce:text>Petroleum</ce:text>
</ce:keyword>
</ce:keywords>
</head>
</converted-article>
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<mods version="3.6"><titleInfo><title>Calorimetric measurement of molar excess enthalpies of dilute solutions of ethylbenzene + higher n -alkanes</title>
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<titleInfo type="alternative" contentType="CDATA"><title>Calorimetric measurement of molar excess enthalpies of dilute solutions of ethylbenzene + higher</title>
</titleInfo>
<name type="personal"><namePart type="given">P.M.</namePart>
<namePart type="family">Ghogomu</namePart>
<affiliation>Department of Inorganic Chemistry, Faculty of Science, University of Yaounde I, P.O. Box 812, Yaounde, Cameroon</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">M.</namePart>
<namePart type="family">Bouroukba</namePart>
<affiliation>Ecole Nationale Supérieure des Industries Chimiques (INPL), Laboratoire de Thermodynamique des Séparations I Rue Grandville, B.P. 451, 54001 Nancy, France</affiliation>
<role><roleTerm type="text">author</roleTerm>
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</name>
<name type="personal"><namePart type="given">J.</namePart>
<namePart type="family">Dellacherie</namePart>
<affiliation>Ecole Nationale Supérieure des Industries Chimiques (INPL), Laboratoire de Thermodynamique des Séparations I Rue Grandville, B.P. 451, 54001 Nancy, France</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">D.</namePart>
<namePart type="family">Balesdent</namePart>
<affiliation>Ecole Nationale Supérieure des Industries Chimiques (INPL), Laboratoire de Thermodynamique des Séparations I Rue Grandville, B.P. 451, 54001 Nancy, France</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">M.</namePart>
<namePart type="family">Dirand</namePart>
<affiliation>Corresponding author. Fax: (33) 03 83.35.08.11</affiliation>
<affiliation>Ecole Nationale Supérieure des Industries Chimiques (INPL), Laboratoire de Thermodynamique des Séparations I Rue Grandville, B.P. 451, 54001 Nancy, France</affiliation>
<affiliation>E-mail: mdirand@ensic.u-nancy.fr</affiliation>
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<dateIssued encoding="w3cdtf">1997</dateIssued>
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<abstract lang="en">Abstract: Flow calorimetry has been used to measure the excess enthalpies (heats of mixing) of dilute solutions of higher n-alkanes (hexadecane to pentacosane) in ethylbenzene. The results show that at constant temperature and composition, hE increases with the number of carbon atoms in the n-alkane molecule. Also, for each alkane, hE decreases with increasing temperature, at constant composition. A simple analytical expression is used to represent the variation of hE with carbon number n, composition x, and temperature T in the domain (16 ≤ n ≤ 25; x ≤ 0.15; 298.15 ≤ T ≤ 330.00).</abstract>
<subject><genre>Keywords</genre>
<topic>Excess thermodynamic properties</topic>
<topic>n-alkanes</topic>
<topic>Solvent</topic>
<topic>Crystallization</topic>
<topic>Wax</topic>
<topic>Petroleum</topic>
</subject>
<relatedItem type="host"><titleInfo><title>Thermochimica Acta</title>
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<dateIssued encoding="w3cdtf">19971022</dateIssued>
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<identifier type="ISSN">0040-6031</identifier>
<identifier type="PII">S0040-6031(00)X0045-7</identifier>
<part><date>19971022</date>
<detail type="volume"><number>302</number>
<caption>vol.</caption>
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<detail type="issue"><number>1–2</number>
<caption>no.</caption>
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<extent unit="issue-pages"><start>1</start>
<end>226</end>
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<extent unit="pages"><start>159</start>
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