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Approche prévisionnelle de la valorisation électrochimique du CO2 dans les carbonates fondus

Abstract : Carbon Dioxide is a greenhouse which can be valorised by means of electrochemical valorisation into carbon monoxide. The main goals of the thesis consist in the theoretical determination of the conductive conditions leading to this electrochemical valorisation in alkali molten carbonates along with the study of the feasability of this electrochemical reduction in binary and ternary eutectics under experimental condition. CO2 solubility has been determined by manometric measure and increase along with the temperature. CO2 electrochemical experimental feasibility into CO in eutectics on gold plate electrode and graphite carbon has been prooved by cyclic voltamperometry for temperatures exceeding 550°C , without gold plate electrode preatreatement and with gold plate preatreatement by an pre-electrolysis at potential sligthly negative as the CO2 reduction potential. A global approach of reactional mecanisms implied in CO2 reduction is proposed.
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  • HAL Id : tel-01662360, version 1

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Déborah Chery. Approche prévisionnelle de la valorisation électrochimique du CO2 dans les carbonates fondus. Chimie théorique et/ou physique. Université Pierre et Marie Curie - Paris VI, 2015. Français. ⟨NNT : 2015PA066697⟩. ⟨tel-01662360⟩

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