Vapor Pressure and Isobaric Vapor–Liquid Equilibrium for Binary Systems of Furfural, 2-Acetylfuran, and 5-Methylfurfural at 3.60 and 5.18 kPa

Abstract

The saturated vapor pressures of furfural (FUR), 2-acetylfuran (2AF), and 5-methylfurfural (5MF) and the isobaric vapor−liquid equilibrium (VLE) data for three binary systems (FUR + 2AF, FUR + 5MF, and 2AF + 5MF) at 3.60 and 5.18 kPa were experimentally measured in a Rose−Williams still. The saturated vapor pressures were correlated by the Antoine equation; the binary VLE data were correlated by the nonrandom two-liquid, Wilson, and universal quasichemical models. The VLE of the ternary system of FUR + 2AF + 5MF was predicted by the obtained binary interaction parameters for each model, and the predictions fit well with the experimental data.

Evaluation of experimental and predicted vapor-liquid equilibrium data for systems relevant to biomass fast pyrolysis and catalytic upgrading

“…The (2-furaldehyde + 5-methylfurfural) binary was studied in two works [49,50]. These results are mutually consistent though the values predicted with NIST-modified UNIFAC deviate from them (Figs.…”

“…Diamonds () are for 2-furaldehyde + γ-valerolactone, Pokki et al [48]. Squares () are for 2-furaldehyde + 2-acetylfuran, Zheng et al [49]. Triangles down are for 2-furaldehyde + 5-methylfurfural: , Fele and Grilic [50]; , Zheng et al [49].…”

“…Squares () are for 2-furaldehyde + 2-acetylfuran, Zheng et al [49]. Triangles down are for 2-furaldehyde + 5-methylfurfural: , Fele and Grilic [50]; , Zheng et al [49]. The data obtained with NIST-modified UNIFAC seem to be incorrect.…”

“…The data obtained with NIST-modified UNIFAC seem to be incorrect. Stars (☆) are for 2-acetylfuran + 5-methylfurfural, Zheng et al [49].…”

Isobaric Vapor–Liquid Equilibrium for Binary System of Isoamyl dl-Lactate and Isoamyl Alcohol at 25.0, 50.0, and 101.3 kPa

“…In this paper, the temperature and the equilibrium composition of the system were measured at certain pressures ( p = 25.0, 50.0, 101.3 kPa). As the experiments were conducted at low pressure ( p ≤ 101.3 kPa), the vapor phase could be considered as ideal gas, and the activity coefficient of component i in liquid (γ i ) can be calculated according to eq where p i s is the saturated vapor pressure of a pure liquid i at the specified temperature.…”