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Project

Dual catalysis approach for the carboxylation of aliphatic olefins using CO2 as the carbon source (2CCO2). (2CCO2)

2CCO2 works on the build-up of CO2 in organic molecules, especially in monomers that are the building blocks of plastics, such as adipic acid (1,6-hexanedioic acid) and methacrylate esters. We do this by allowing 2 reactions to take place in the same system, namely the partial hydrogenation of CO2 to CO (the so-called 'Reverse Water Gas Shift reaction', RWGSR) and the assisted coupling of one or two carbon atoms of CO to a carbon skeleton. , e.g. from butadiene to ethylene. Both reactions can potentially operate in the same conditions of pressure and temperature; this has the advantage that the equilibrium of the RWGSR is constantly shifted to the right by the consumption of CO in the published reaction. In addition to the choice of a stable homogeneous catalyst, it is important that the RWGSR catalytic function is incorporated into a shape-selective zeolite so that there is no unproductive hydrogenation of the olefin resistance. Given a three-phase state (gas, liquid, zeolite), and it is also important to understand the diffusion, adsorption and reactions in that complex system.

Because the expected molecules are produced on an enormous scale, the potential impact on CO2 emissions is very large. The project is therefore important for companies that emit (very) large amounts of CO2, olefin producers and companies that market polymers such as polyamides.

Date:1 Oct 2022 →  Today
Keywords:carboxylation, carbon source
Disciplines:Biocatalysis