Maria C. Martin

Microwave spectra of deuterated furans. Revised molecular structure of furan

Abstract The microwave spectra of furan, [2-D], [3-D] and [2,5-D 2 ] furans have been reinvestigated. Also the spectrum of [D 4 ]furan was assigned and measured. Determination of atomic coordinates by mono- and disubstitution is discussed. The complete substitution structure has been redetermined confirming results of earlier work.

Excess thermodynamic functions for ternary systems containing fuel oxygenates and substitution hydrocarbons. 1. Total-pressure data and GE for methyl tert-butyl etherbenzenecyclohexane at 313.15 K

Abstract Experimental isothermal P–x–y data for the ternary system (methyl tert-butyl ether (MTBE)+n-heptane+1-hexene) and for its corresponding binaries at 313.15 K are reported. Data reduction by Barkers method provides correlations for GE using the Margules equation for the binary systems, the Wohl expansion for the ternary system and Wilson, NRTL and UNIQUAC models for both binary and the ternary mixtures.

Phase equilibrium properties of binary and ternary systems containing tert-amylmethyl ether (TAME) as oxygenate additive and gasoline substitution hydrocarbons at 313.15 K

Abstract Experimental isothermal P – x – y data for the binary systems ( tert -amylmethyl ether (TAME)+the hydrocarbons n -heptane, cyclohexane, benzene and 1-hexene) and the ternary system ( tert -amylmethyl ether (TAME)+1-hexene+cyclohexane) at 313.15 K are reported. Data reduction by Barkers method provides correlations for G E using the Margules equation for the binary systems and the Wohl expansion for the ternary system. Wilson, NRTL and UNIQUAC models have been applied successfully to both the binary and the ternary systems presented here and they have been used for predicting the behaviour of the other ternary systems involving TAME+hydrocarbon+hydrocarbon, where the four types of substitution hydrocarbons have been used.

Isothermal vapor-liquid equilibria of binary mixtures containing methyl tert-butyl ether (MTBE) and / or substitution hydrocarbons

Abstract Isothermal P-x-y data are reported for the binary systems methyl tert-butyl ether (MTBE) + 1-hexene, n-hexane + 1-hexene, benzene + n-heptane at 313.15 K, and the latter also at 298.15 K. Data reduction by Barkers method provides correlations for GE using the Margules equation.

Experimental investigation of the vapor–liquid equilibrium at 313.15 K of the ternary system tert-amylmethyl ether (TAME)+n-heptane+methanol

Abstract Experimental isothermal P–x data at 313.15 K for the ternary system (tert-amylmethyl ether (TAME)+n-heptane+methanol) and for one of the unmeasured constituent binary systems, (tert-amylmethyl ether (TAME)+methanol) are reported. Data reduction by Barkers method provides correlations for gE using the Margules equation for the binary systems and the Wohl expansion for the ternary system. Wilson, NRTL and UNIQUAC models have been applied successfully to both the binary and the ternary systems. The presence of azeotropes in the ternary system and constituent binaries are studied as well as the presence of immiscible zones.

Vapor-liquid equilibrium data at 25°C for six binary systems containing methyl acetate or methanol, with dichloromethane, chloroform, or 1,2-trans-dichloroethylene

Isothermal vapor-liquid equilibrium (VLE) data, at 25° C were determined by a saturation method for each of the six methanol or methyl acetate binary systems with dichloromethane, chloroform, and 1,2-trans-dichloroethylene. The experimental data satisfy the Redlich-Kister consistency test, and were correlated with five Gibbs free energy models. All the binary mixtures of methanol with the chlorinated compounds exhibit strong positive deviations from ideality while the mixtures of methyl acetate with the chlorinated compounds present negative deviations from ideal behavior.

Vapor-liquid equilibrium data, at 298.15 K, for six binary systems containing methyl acetate or methanol, with acetonitrile, nitromethane or nitroethane

Abstract Martin, M.C., Cocero, M.J. and Mato, F., 1992. Vapor-liquid equilibrium data, at 298.15 K, for six binary systems containing methyl acetate or methanol, with acetonitrile, nitromethane or nitroethane. Fluid Phase Equilibria , 74: 243-252. Isothermal vapor-liquid equilibria were measured at 298.15 K for the systems containing methyl acetate or methanol with the three nitrogen compounds acetonitrile, nitromethane and nitroethane. The experimental data satisfy the Redlich-Kister thermodynamic consistency test. The liquid-phase activity coefficients were fitted by using the van Laar, Mato, NRTL, Wilson and UNIQUAC equations. The systems with methyl acetate present slight positive deviations from ideality while the systems containing methanol exhibit strong positive deviations.