Experimental Vapor Pressures of Five Saturated Fatty Acid Ethyl Ester (FAEE) Components of Biodiesel

Abstract

Vapor pressures of five saturated fatty acid ethyl esters (FAEEs), ethyl hexanoate (or ethyl caproate), ethyl octanoate (or ethyl caprylate), ethyl decanoate (or ethyl caprate), ethyl dodecanoate (or ethyl laurate), and ethyl tetradecanoate (or ethyl myristate), were measured at pressures from 1 Pa to 180 kPa and temperatures from (253.15 to 463.15) K using a static apparatus. These esters are a light fraction present in biodiesel derived from palmist oil and copra oil (Ballerini and Alazard-Toux, Les biocarburants; IFP Publications: Paris, 2006). The experimental data (P–T) were smoothed using the Antoine equation and compared with the available literature values. The molar enthalpies of vaporization at the mean temperature of the experimental range were derived from the Clausius–Clapeyron equation. From these results the standard enthalpies of vaporization at T = 298.15 K were calculated.

Comparison of various methods for the estimation of vapor pressure of fatty acid methyl and ethyl esters (FAAE’s)

“…(11) and (12) provided the values of the parameters (a, b, c and d) for Eqs. (11) and (12). The values of these parameters are mentioned in Table 8.…”

“…The experimental vapor pressure data for FAME's as reported by Scott et al [8], Rose and Supina [9], Bonhorst et al [10] and for FAEE's as reported by Benziane et al [11] were used for this study. Total 244 data points for FAME's in the temperature range of 306-512 K and 55 data points for FAEE in the temperature range of 273-462 K were considered for the estimation of vapor pressure.…”

Binary mixtures of fatty acid ethyl esters: Solid-liquid equilibrium

“…Physicochemical properties like as vapour pressure [5,6], Flash point [7], densities and viscosities [8][9][10][11] and equilibrium data of biodiesel and its components, namely fatty acids methyl esters (FAME) or FAEE [12][13][14] have been determined with the objective to improve the biodiesel production and its use as energy source.…”

“…Melting and transition temperatures of binary mixtures formed by ethyl caprate (2), ethyl laurate (3) and ethyl myristate (4) with ethyl linoleate(6). e…”

Experimental determination and prediction of liquid-solid equilibria for binary (methyl palimitate + naphthalene) mixture

“…This study is a continuation of research works on the thermodynamic properties of organic compounds present in diesel/biodiesel blends and phase equilibria of their mixtures [8,9]. It concerns the experimental determination and modeling of solid-liquid equilibria (LSE) of the binary system: Methyl palmitate (1) + Naphthalene (2).…”