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Electrochemical reduction of CO2 by molecular macrocycles: spectroscopic and mechanistic studies

Séminaire / Recherche

Le 27 juin 2024

Saint-Martin-d'Hères - Domaine universitaire

Photo nenedikt Lassalle
Dr Benedikt LASSALLE

Dr Benedikt LASSALLE
Synchrotron SOLEIL, Paris-Saclay campus

https://www.benlassalle.com/home

Partenaires

Abstract: " The electrochemical reduction of CO2 into value-added products is an exciting strategy to use this gas as a chemical feedstock for various chemical reactions. In order to do so, it is essential to understand the mechanism by which CO2 is reduced into C1 products but also if and how these molecules can be further reduced. We will present the work that we have done in recent year to understand the structure of molecular macrocycles based on transition metals upon electrochemical CO2 reduction. In a first part, we will show how X-ray absorption spectroscopy can be used to describe the local and electronic structure of the iconic Fe-Tetraphenylporphyrin in the absence and presence of CO2 under reducing conditions. In a second part, we will show the ability of Fe Phthalocyanine to make C-C bonds from CO2, up to C3 and C4 products. On the basis of experimental and theoreticla evidences, we will propose mechanistic pathways for this most peculiar reactivity."

Date

Le 27 juin 2024
Complément date

14 heures

Localisation

Saint-Martin-d'Hères - Domaine universitaire

Complément lieu

Salle de Conférences Nanobio
570 rue de la Chimie

Contact

Dr Marie-Noëlle Collomb

marie-noelle.collomb [at] univ-grenoble-alpes.fr

Publié le 23 mai 2024

Mis à jour le 23 mai 2024