Density, Excess Molar Volume and Vapor–Liquid Equilibrium Measurements at 101.3 kPa for Binary Mixtures Containing Ethyl Acetate and a Branched Alkane: Experimental Data and Modeling

Abstract

Vapor–liquid equilibrium (VLE) and density data for binary systems of branched alkanes + ethyl acetate are scarce in the literature. In this study, the binary mixtures 3-methylpentane + ethyl acetate and 2,3-dimethylbutane + ethyl acetate were investigated. Density measurements at atmospheric pressure were performed using a vibrating tube density meter at 293.15, 298.15 and 303.15 K. Large and positive excess molar volumes were calculated and correlated using a Redlich–Kister-type equation. Isobaric VLE data at 101.3 kPa were obtained using a Gillespie-type recirculation ebulliometer. Equilibrium compositions were determined indirectly from density measurements. The experimental data were checked for consistency by means of the Fredenslund test and the Wisniak (L-W) test and were then successfully correlated using the NRTL model. The newly studied binary systems display high deviations from ideality and minimum boiling azeotropes, the coordinates of which are reported in this work.

Phase Equilibrium and Transport Properties of the Ionic Liquid 1-Ethyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)amide and Compressed Difluoromethane and Pentafluoroethane

“…Nevertheless, it is worth noting that all of the aforementioned systems exhibit higher magnitudes of excess molar volumes than typical organic liquid mixtures. 97,98 Moreover, systems involving 2,2,2trifluoroethanol (TFE) or methanol and imidazolium-based ILs exhibit excess molar volumes that are 10−100X less than those of the HFC/IL systems investigated here. 99,100 In addition, water/IL mixtures typically display much lower magnitudes of excess molar volumes (compared to systems in this study).…”

Thermodynamic Behavior of the (Methylcyclopentane + Ethyl Acetate) Binary Liquid Mixture: Density at Several Temperatures and Vapor–Liquid Equilibrium at 25, 50, and 101.3 kPa

“…A vibrating tube density meter (DMA 4500 M, Anton Paar) was employed to measure pure-component and mixture densities under atmospheric pressure ( p = 101 kPa) at five different temperatures ( T ) ranging from 288.15 to 308.15 K. More details about the experimental method employed can be found in previous works. , Eighteen binary mixtures of known compositions were prepared for the system EA + mC6 and 19 for the system mC5 + EA to precisely describe the whole composition range. The binary mixtures were prepared using a precision balance (Mettler Toledo, model ML204) with a weighing error ( u weighing ) of less than 0.0002 g. The standard uncertainty in composition was calculated through the following expression u false( x 1 false) = x 1 false( 1 − x 1 false) true( u false( m 1 false) m 1 true) 2 + true( u false( m 2 false) m 2 true) 2 in which x 1 stands for the mole fraction of component 1 and m 1 and m 2 are the weighted masses of the pure components.…”

“…VLE data were measured by using a recirculation ebulliometer (Labodest VLE 602, ILUDEST, Germany). This commercial apparatus is routinely employed to acquire isobaric VLE data under low pressure and is extensively described in our previous works , and in many other studies. ,− Figure depicts the experimental VLE device.…”

“…VLE data were measured by using a recirculation ebulliometer (Labodest VLE 602, ILUDEST, Germany). This commercial apparatus is routinely employed to acquire isobaric VLE data under low pressure and is extensively described in our previous works 14,36 and in many other studies. 1,39−42 The principle of the apparatus is based on the continuous circulation of the vapor and liquid phases through the device, which comprises a Cottrell pump (3) and a separation chamber (4).…”

“…Mixtures of esters and hydrocarbons are commonly encountered in many industrial fields since several widely used solvents are among these types of compounds. Numerous studies have thus been published regarding the phase equilibria and thermodynamic properties of binary systems of esters with normal and branched alkanes. − Among those, an ester that features prominently is ethyl acetate, which is one of the most industrially employed short-chain esters. Mixtures of ethyl acetate with aromatic compounds and unsubstituted naphthenes (mainly cyclohexane) have also been significantly studied.…”