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

Abstract

Isothermal vaporÀliquid equilibrium (VLE) for three binary systems was measured with a static total pressure method. The methoxymethane þ methyl formate equilibrium was measured at 308 K, methoxymethane þ hexane at 308 K and 335 K, and methyl formate þ methanol at 359 K. The measured data were reduced to phase equilibrium data with the Barker's method. Legendre, Wilson, nonrandom two-liquid (NRTL), and universal quasichemical (UNIQUAC) parameters and modified universal functional (UNIFAC, Dortmund) pressure residuals were calculated. All binaries exhibited a positive deviation from the Raoult's law. A maximum pressure azeotrope was observed for the methyl formate þ methanol system.

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.…”

Design of a Production Process for Poly(oxymethylene) Dimethyl Ethers from Dimethyl Ether and Trioxane

“…Further, dimethyl ether is also modeled as one structural group in the present work. The volume and surface parameters are adopted from Sundberg et al . The interaction parameters of the dimethyl ether group are set equal to those of methylal.…”

“…Further, dimethyl ether is also modeled as one structural group in the present work. The volume and surface parameters are adopted from Sundberg et al [35].…”

Suitable commercial catalysts for the synthesis of oxymethylene dimethyl ethers

“…However, due to a very narrow boiling point curve with OME 1 , the separation from the product mixture can be expensive. 48,49 This is an important aspect that should be addressed by extended experimental investigations for selected catalysts and the influence of MEFO handling strategies on the complete process design should be evaluated in further investigations.…”

“…However, due to a very narrow boiling point curve with OME 1 , the separation from the product mixture can be expensive. 48,49 This is an important aspect that should be addressed by extended experimental investigations for…”