Phase transitions and azeotropic properties of acetic acid–n-propanol–water–n-propyl acetate system

Phase and chemical equilibria in multicomponent fluid systems with a chemical reaction

“…47 Also, data of different authors concerning characteristics of azeotropes in this system at 313.15 K were considered. Some graphical illustrations were presented, including the chemical equilibrium surface in the composition tetrahedron, the vapour ± liquid isotherms-isobars on the chemical equilibrium surface projected onto the square of a-variables, including those with marked pressure maximum points on these surfaces.…”

“…In addition, the shape of the binodal surface was shown in illustrations of the paper. The main objective of this work 47 comprised also analysis of available contradictory data concerning the phase behaviour of the system under consideration. In particular, the possibility of intersection of the surfaces of the chemical and phase equilibria in the concentration space was discussed; however, the final conclusion remained open to question because of deficiency of the experimental data.…”

“…In some of the studies considered in the present review, there are data concerning variations in pressure on the chemical equilibrium surfaces, including the pressure extremums on these surfaces (for instance, for the equilibrium states of the system with the reaction of n-propyl acetate synthesis 47 ). The presence or absence of a reactive azeotrope in particular systems was discussed in several studies.…”

“…42,62,63 The patterns of curves of combined reactive mass-transfer processes on the chemical equilibrium surfaces was also presented in some publications. 28,42,43,47 The problem of relative arrangement of chemical and phase equilibrium surfaces in the concentration space, which was mentioned in Section II, has a clear practical significance when phase-separated reaction mixtures are considered. A typical general view of the chemical equilibrium and binodal surfaces and their locations in the composition tetrahedron for the systems with the esterification ± ester hydrolysis reaction are presented in Fig.…”

Excess molar enthalpies for binary mixtures of n-propanol, acetic acid, and n-propyl acetate at 313.15K and atmospheric pressure

“…Recently we published some experimental data and results of the modeling of solubility, liquid-liquid equilibrium, vapor-liquid equilibrium and chemical equilibrium for the system AcOH + nPrOH + n-PrOAc + H 2 O at few temperatures [1][2][3][4]. The study of excess thermodynamic properties of some binary subsystems of this quaternary system had been carried out by various authors [5][6][7].…”