Purification en aval de produits pour la synthèse de molécules renouvelables

Details

Supervisors

Luis Alconero, Patricia

Faculty

Ecole polytechnique de Louvain

Degree label

Master [120] : ingénieur civil en chimie et science des matériaux

Abstract

enThis thesis is part of the "Flow4Syn" project itself part of the "Intense4Chem" project, launched by Europe and Wallonia with the aim of building a better future. More specifically, the "Flow4Syn" project aims to reduce the energy cost of purifying reaction products and to provide a new solution for distillation. This work focuses, in this context, on the transesterification reaction between glycerol and dimethyl carbonate, which is now highly developed due to the increasing production of biodiesel, which produces a large quantity of by-product, namely glycerol. One way to use this glycerol is to produce glycerol carbonate from dimethyl carbonate as well. The problem is that a mixture of four compounds is obtained, two of them forming an azeotropic mixture which must be separated by an alternative technique to distillation. This is where pervaporation comes in because it is a technique that separates an azeotrope mixture while reducing the energy cost of this separation. The challenge of the project is to find the membrane that would allow the reactor outlet to remove the methanol, the by-product, directing the reaction to the right and thus increasing the amount of glycerol carbonate produced while decreasing the amount of methanol. In this work, polyacrylonitrile supports whose pores have been impregnated with different ionic liquids have been tested at different temperatures and with pure feed, either methanol or dimethyl carbonate. The results thus obtained show that all the membranes tested were highly selective for dimethyl carbonate but not for methanol.

Citations

• APA

Depasse, Y. (2019). Purification en aval de produits pour la synthèse de molécules renouvelables. https://dial-mem.test.bib.ucl.ac.be/handle/2078.2/13018