Thermodynamic Properties of Ethanol

Temperature Pressure Density Volume Int. energy Enthalpy Entropy C CT Sound speed Joule-Thomson Therm, cond. Viscosity 

Temperature K Pressure MPa Density mol/dm3 Volume dmVmol Int. energy kj/mol Enthalpy kj/mol Entropy kJ/(mol-K) cw kJ/(mol-K) cT kJ/(mol K) Sound speed m/s Joule-Thomson K/MPa Therm, cond. mW/(m-K) Viscosity 0.Pa s 

The uncertainties in the equation of state are 0.2% in density, 3% in heat capacities, 1% in speed of sound, and 0.5% in vapor pressure and saturation densities. The estimated uncertainty in the liquid phase along the saturation boundary is approximately 3%, increasing to 10% at pressures to 100 MPa, and is estimated at 10% in the vapor phase. The estimated uncertainty in the liquid phase is approximately 5% and is estimated as 10% in the vapor phase. 

The values in these tables were generated from the NIST REFPROP software (Lemmon, E. W., McLinden, M.O., and Huber, M.L., NIST Standard Reference Database 23 Reference Fluid Thermodynamic and Transport Properties—REFPROP, National Institute of Standards and Technology, Standard Reference Data Program, Gaithersburg, Md., 2002, Version 7.1). The primary source for the thermodynamic properties is Dillon, H. E., and Penoncello, S. G., A Fundamental Equation for Calculation of the Thermodynamic Properties of Ethanol, Int. J. Thermophys., 25(2) 321-335,2004. The source for viscosity is Kiselev, S. B., Ely, J. E, Abdulagatov, I. M., and Huber, M. L., Generalized SAFT-DFT/DMT Model for the Thermodynamic, Interfacial, and Transport Properties of Associating Fluids Application for n-Alkmols, Ind. Eng. Chem. Res., 44 6916-6927, 2005. The source for thermal conductivity is unpublished, 2004 however, the fit uses functional form found in Marsh, K., Perkins, R., and Ramires, M.L.V, Measurement and Correlation of the Thermal Conductivity of Propane from 86 to 600 K at Pressures to 70 MPa, J. Chem. Eng. Data, 47(4) 932-940, 2002. 

---

Kolbe, B. and Gmehling, J., Thermodynamic properties of ethanol + water, II. Potentials and limits of G models. Fluid Phase Equilibria, 23 (1985) 227-242. 

The values in these tables were generated from the NIST REFPROP software (Lemmon, E. W., McLinden, M.O., and Huber, M.L., NIST Standard Reference Database 23 Reference Fluid Thermodynamic and Transport Properties—REFPROP, National Institute of Standards and Technology, Standard Reference Data Program, Gaithersburg, Md., 2002, Version 7.1). The primary source for the thermodynamic properties is Dillon, H. E., and Penoncello, S. G., A Fundamental Equation for Calculation of the Thermodynamic Properties of Ethanol, Int. J. Thermophys., 25(2) 321-335,2004. The source for viscosity is Kiselev,... 

Kolbe, B. Gmehling, J. Thermodynamic properties of ethanol -t- water. I. Vapour-liquid equihbria measuremen s rom o ISO.deg.C by the static method Fluid Phase Equilib. 1985,23, 213-226... 

R. C. Pemberton and C. J. Mash. "Thermodynamic Properties of Aqueous Non-Electrolyte Mixtures II. Vapour Pressures and Excess Gibbs Energies for Water-)- Ethanol at 303.15 to... 

Anhydrous copper(II) sulfate, 7 773 Anhydrous ethanol, production by azeotropic extraction, 8 809, 817 Anhydrous gaseous hydrogen sulfide, 23 633 Anhydrous hydrazine, 13 562, 585 acid-base reactions of, 13 567-568 explosive limits of, 13 566t formation of, 13 579 vapor pressures of, 13 564 Anhydrous hydrogen chloride, 13 809-813 physical and thermodynamic properties of, 13 809-813 purification of, 13 824-825 reactions of, 13 818-821 uses for, 13 833-834... 

Martinez, R., Gonzalez, J.A., de la Fuenta, LG., and Cobos, J.C. Thermodynamic properties of n-alkoxyethanols + organic solvent mixtures. XIV. Liquid-liquid equilibria of systems containing 2-(2-ethoxyethoxy)ethanol and selected alkanes. J. Chem. Eng. Data, 45(6) 1036-1039, 2000. 

We have made a quantitative investigation of the spectra of methanol, ethanol and 6-butanol over rather wide temperature and concentration ranges ( —15° to + 60°C, and 0 005 to 1 M) in order to obtain more precise information as to the spectral and thermodynamic properties of the alcohol systems. We are particularly interested in establishing such properties for a single specific species, the dimer. 

Pemberton R.C., Mash C.J., "Thermodynamic properties of aqueous nonelectrolyte mixtures II. Vapour pressures and excess Gibbs energies for water + ethanol at 303.15 K to 363.15 K determined by an accurate static method"., J. Chem. Therm., 1978, 10, 867-88. 

Pemberton, R. C. Thermodynamic properties of aqueous nonelectrolytes mixtures. Vapor pressures for the system water -I- ethanol 303.15— 363.15 K determined by an accurate static method. Conf. Int. Thermodyn. Chim. Montpellier 1975, 6, 137-144. 

S. cerevisiae has been transformed with the P. stipitis genes XYLl and XYL2 coding for XR and XDH, respectively [46,47,141 ]. The choice of P. stipitis as the donor organism was based on its capability to utilize NADH in the xylose reduction step. Attempts to ferment xylose to ethanol with these recombinant S. cerevisiae producing XR/XDH have resulted in low ethanol yield and considerable xylitol by-product formation. This has been ascribed to the unfavorable thermodynamic properties of the reactions [140] and the fact that the first reaction preferably consumes NADPH, whereas the second reaction exclusively produces NADH. When less NADH is consumed in the XR reaction, then less NAD" is available for the XDH reaction. If the amount of NAD+ is insufficient, xylitol is produced and excreted [133]. 

SURFACE THERMODYNAMIC PROPERTIES OF N-LONG-CHAIN ALCOHOLS, ALKOXY ETHANOLS, PROPANOLS, AND BUTANOLS. 

The main thermodynamic properties of the methanol and ethanol steam reforming reactions are plotted in Fig. 18.3 for comparison. Both are endothermic. However, they are spontaneous, due to large entropy changes associated with the dissociation of the alcohols. Spontaneous methanol dissociation is obtained at a lower temperature (AG < 0 at - 325 K) compared to ethanol (AG < 0 at 475 K), which requires practical dissociation temperatures of 600 K. It is therefore possible to incorporate a palladium permeation membrane into a methanol steam reformer (in such cases, both processes are operating at the same temperature) whereas for ethanol, reforming and extraction of hydrogen are usually performed in two separate... 

Brown, I. Fock, W. Smith, F. Thermodynamic properties of alcohol solutions. II. Ethanol and isopropanol systems Aust. J. Chem. 1956, 9, 364-372... 

Ambrose, D., Sprake, C.H.S., Townsend, R., 1975. Thermodynamic properties of organic oxygen compounds XXXVn. Vapour pressures of methanol, ethanol, pentan-1 -ol, and octan-1 -ol from the normal boiling temperature to the critical temperature. J. Chem. Thermodyn. 7,185-190. 

Pemberton, R. C. "Thermodynamic Properties of Aqueous Nonelectrolyte Mixtures. Vapor Pressures for the System Water + Ethanol at 303.15-363.15K Determined by an Accurate Static Method," Communications of 4th International Conference on Chemical Thermodynamics, VI, 137 (1975). 

Hu, J. Tamura, K. Murakami, S. Excess thermodynamic properties of binary mixtures of ethyl acetate with benzene, ethanol,... 

---