Phasengleichgewichtsuntersuchungen dampfförmig‐flüssig am System Methanol/Methylformiat unter Verwendung einer gaschromatographischen Analysenmethode

Abstract

Es werden die Ergebnisse von isothermen (t = 30 °C) und isobaren (P = 760 Torr) Phasengleichgewichtsmessungen am System Methanol/Methylformiat mitgeteilt. Gleichzeitig wird eine kurze Beschreibung der verwendeten Gaschromatographie‐Apparatur gegeben, mit der die erforderlichen Analysen durchgeführt wurden.

Solvent Effects in the Carbonylation of Methanol

“…This method gives a good prediction of the activity coefficients of nonelectrolyte systems in the temperature range 2-127 °C. The predicted activity coefficients for mixtures of methanol/methyl formate and methanol/toluene compare well with the experimental data of Kozub et al (1962) and Nagata (1988). The expressions proposed by Kozub et al (1962) and the UNIFAC method both gave a good prediction of the activity coefficient of the methanol/methyl formate system, but the former was used due to its simplicity and the latter was used for systems containing toluene.…”

“…The activity coefficients of methanol and methyl formate in methanol/methyl formate mixtures have been studied by Polak and Lu (1972) at atmospheric pressure and a temperature of 298.15 K. Kozub et al (1962) studied the system at isothermal (303.15 K) as well as isobaric (1 atm vapor pressure) conditions and showed that the activity coefficients of methanol and methyl formate could be well represented by eqs 11 and 12, respectively. The activity coefficients of methanol and methyl formate calculated from these equations are in agreement with the data of Polak and Lu (1972).…”

Methylformate from CO2: an integrated process combining catalytic hydrogenation and reactive distillation

“…This result confirms the principle feasibility of the esterification via reactive distillation, but indicates also a slow conversion rate of [FA•MDEA] to MF and the necessity to have a higher number of separation trays to increase the production and the MF purity at the top of the column. [42][43][44] Moreover, the residual mixture turned yellow during the distillation period of 8 h, indicating a possible degradation of the amine, a known drawback of MDEA-based scrubbers. 45,46 The results from the catalytic and distillation experiments lead to the conclusion that while MDEA provides an excellent stabilizer for the hydrogenation step, this amine is not suitable for the MF formation step.…”

Vapor−Liquid Equilibrium for Methoxymethane + Methyl Formate, Methoxymethane + Hexane, and Methyl Formate + Methanol

“…Liquid phase equilibrium composition in mole fractions of methyl formate + methanol. This work at 358.94 K, ◻; Zharov and Pervukhin at 318.15 K, ◼; Kozub et al at 303.15 K, ▲; Polak and Lu at 298.15 K, ◆. Lines represent values calculated with the Wilson model.…”