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Coupling electrocatalytic CO2 reduction with thermocatalysis enables the formation of a lactone monomer

Marc Fontecave 1 Louise Ponsard 2 Emmanuel Nicolas 2 Ngoc Huan Tran 3 Sarah Lamaison 3 David Marc Wakerley 3 Thibault Cantat 2 
1 Chaire Chimie des processus biologiques
LCPB - Laboratoire de Chimie des Processus Biologiques
2 LCMCE - Laboratoire de Chimie Moléculaire et de Catalyse pour l'Energie (ex LCCEF)
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
Abstract : Carbonylation reactions that generate high-value chemical feedstocks are integral to the formation of many industrially significant compounds. However, these processes require the use of CO, which is invariably derived from fossil-fuelreforming reactions. CO may also be generated through the electroreduction of CO2, but the coupling of these two processes is yet to be considered. Merging electrocatalytic reduction of CO2 to CO with thermocatalytic use of CO would expand the range of the chemicals produced from CO2. This work describes for the first time the development of a system coupling a high-pressure CO2 electrolytic cell containing a bimetallic ZnAg catalyst at the cathode for production of CO with a reactor with a faradaic efficiency of >90 % where high pressure CO is used for carbonylating propylene oxide into β-butyrolactone by thermal catalysis, the latter step having a reaction yield above 80%. While the production of monomers and polymers from CO2 is currently limited to organic carbonates, this strategy opens up the access to lactones from CO2, for the formation of polyesters.
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Submitted on : Thursday, March 11, 2021 - 9:31:06 AM
Last modification on : Sunday, June 26, 2022 - 3:05:54 AM
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Marc Fontecave, Louise Ponsard, Emmanuel Nicolas, Ngoc Huan Tran, Sarah Lamaison, et al.. Coupling electrocatalytic CO2 reduction with thermocatalysis enables the formation of a lactone monomer. ChemSusChem, ChemPubSoc Europe/Wiley, inPress, 14 (10), pp.2198-2204. ⟨10.1002/cssc.202100459⟩. ⟨cea-03166022⟩



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