Several physical properties and the isobaric vapour-liquid equilibria at 101.32, 50, 30 kPa were measured for binary system consisting of acetone ionic liquid 1-ethyl-3-methyl-imidazolium acetate. Liquid-liquid equilibrium data also temperatures from 298.15 up to 328.35 K atmospheric pressure. An hourglass-shaped miscibility gap was found. The simultaneous correlation both VLE LLE regions 101.3...

A review of the relevant literature on 1-alkyl-1-methylpyrrolidinium-based ionic liquids has been presented. The phase diagrams for the binary systems of {1-ethyl-1-methylpyrrolidinium trifluoromethanesulfonate (triflate) [EMPYR][CF(3)SO(3)] + water, or + 1-butanol} and for the binary systems of {1-propyl-1-methylpyrrolidinium trifluoromethanesulfonate (triflate) [PMPYR][CF(3)SO(3)] + water, or...

Liquid-liquid equilibrium data were measured and analyzed for two ternary systems (biodiesel + methanol glycerol methyl palmitate glycerol). Biodiesel, produced by the conventional chemical route at 60 °C min, using soybean oil a molar rate of 10:1 potassium hydroxide concentration (KOH) 1 wt% exhibited thermal decomposition temperatures between 100 250 ºC, reaching mass loss approximately 98.8...

In this work, new experimental data on thermodynamic properties of ionic liquid (IL) aqueous solutions are presented. The (vapor + liquid) phase equilibria, density, and dynamic viscosity binary mixtures composed N,N-diethyl-N-methylammonium bromide ([NH,1,2,2][Br]), or methanesulfonate ([NH,1,2,2][CH3SO3]) water presented as functions temperature composition. Both ILs were synthesized specific...

Extractive distillation is an alternative for ethanol dehydration processes that has been shown to be more effective than azeotropic distillation and, in close proximity, to be very competitive against the process that uses adsorption with molecular sieves. Glycols have been shown to be the most effective solvents in extractive distillation, mainly ethylene glycol and glycerol. In this work, an...

Mutual diffusion coefficients of all 20 binary liquid mixtures that can be formed out of methanol, ethanol, acetone, benzene, cyclohexane, toluene, and carbon tetrachloride without a miscibility gap are studied at ambient conditions of temperature and pressure in the entire composition range. The considered mixtures show a varying mixing behavior from almost ideal to strongly non-ideal. Predict...

A novel approach for enclosing all homogeneous azeotropes in multicomponent mixtures is presented. The thermodynamic criteria for azeotropy are outlined, and mathematical equations for each criterion are developed. The global optimization approach is based on developing convex underestimators which are coupled with a branch and bound framework in which upper and lower bounds on the solution are...