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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Kočí, Jan | Prague |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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article
Thermochemical study of 2,5-dimethyl-3-furancarboxylic acid, 4,5-dimethyl-2-furaldehyde, and 3-acetyl-2,5-dimethylfuran
Abstract
The standard (p degrees = 0 1 MPa) molar enthalpies of formation in the gaseous state at T = 298 15 K for 2 5-dimethyl-3-furancarboxylic acid 3 acetyl-2 5-dimethylfuran and 4 5 dimethyl 2 furaldehyde were derived from the values of the standard molar enthalpies of formation in the condensed phase and the standard molar enthalpies of phase transition from the condensed to the gaseous state The values of the standard molar enthalpies of formation of the compounds in the condensed phases were calculated from the measurements of the standard massic energies of combustion obtained by static bomb combustion calorimetry The enthalpies of vaporization/sublimation were measured by Calvet high temperature microcalorimetry For 2 5-dimethyl 3 furancarboxylic acid the standard enthalpy of sublimation was also calculated by the application of the Clausius-Clapeyron equation to the temperature dependence of the vapor pressures measured by the Knudsen effusion technique [GRAPHICS]