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Theses

Procédé hybride plasma-catalytique pour la méthanation du CO2

Abstract : The utilization of cold plasmas in combination with an heterogeneous catalyst has recently proven to boost the kinetically impeded CO2 hydrogenation reaction at low temperatures, i.e. without any source of external heating. Nevertheless, there is a complete lack of understanding about the real effect of the plasma, as well as on its coupling to a catalytic system. Moreover, the cylindrical-shaped fixed bed reactors tested so far do not allow a proper control of the physical phenomena, i.e. heat-energy and mass transfer, hindering the industrial application of this hybrid process. The present PhD subject proposes the construction of milli-structured reactors for CO2 hydrogenation. By means of an optimized distribution of the plasma discharge, this configuration will permit the accurate diagnosis of the interaction between the plasma and the catalytic solid phase, and thus, a better understanding of the bulk effects of the coupled plasma-catalytic phenomena. In this sense, the energy practically provided by the plasma can be tailored to fit the requirements of the catalytic reaction. Furthermore, a better control of heat and mass transfer will be gained through the milli-structuration of the catalytic system.
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Submitted on : Tuesday, December 7, 2021 - 4:50:37 PM
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Bo Wang. Procédé hybride plasma-catalytique pour la méthanation du CO2. Plasmas. Université Paris sciences et lettres, 2020. Français. ⟨NNT : 2020UPSLC007⟩. ⟨tel-03469449⟩

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