Thermochemical Studies for Determination of the Standard Molar Enthalpies of Formation of Alkyl-Substituted Furans and Some Ethers |
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| Authors: | Verevkin Sergey P Welle Frank M |
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| Institution: | (1) Institute of Physical Chemistry, University of Rostock, Hermannstr. 14, D-18051 Rostock, Germany;(2) Fraunhofer Institut fuer Lebensmitteltechnologie und Verpackung Giggenhauser, Str. 35, D-85354 Freising, Germany |
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| Abstract: | The standard molar enthalpies of vaporization 
l
g
H
m
º
of 2,5-dimethylfuran, 2-tert-butylfuran, 2,5-di-tert-butylfuran, cyclopentenyl methyl ether, cyclohexenyl methyl ether, and tert-amyl methyl ether were obtained from the temperature variation of the vapor pressure measured in a flow system. The standard (p° = 0.1 MPa) molar enthalpies of formation f H
m
º
(1) at the temperature T = 298.15 K were measured using combustion calorimetry for 2,5-dimethylfuran, 2-tert-butylfuran, and 2,5-di-tert-butylfuran. From the derived standard molar enthalpies of formation for gaseous compounds, ring correction terms and non-nearest neighbor interactions useful in the application of the Benson group additivity scheme were calculated. |
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| Keywords: | Alkyl-substituted furans vinyl ethers enthalpy of combustion enthalpy of vaporization enthalpy of formation strain enthalpy thermochemistry additive increments |
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