Electrocatalytic CO2 reduction toward liquid fuels : on heterogeneous electrocatalysts and heterogenized molecular catalysts

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Electrocatalytic CO2 reduction toward liquid fuels : on heterogeneous electrocatalysts and heterogenized molecular catalysts

Type: Doctoral Thesis
Title: Electrocatalytic CO2 reduction toward liquid fuels : on heterogeneous electrocatalysts and heterogenized molecular catalysts
Author: Birdja, Y.Y.
Issue Date: 2018-04-19
Keywords: Electrocatalysis
CO2 reduction
Electrofuels
Metalloporphyrins
Molecular catalysts
Immobilization
Heterogenization
Selectivity
Activity
Stability.
Abstract: With the energy transition toward a renewable energy supply and a CO2-neutral economy, electrification of the energy system is rising in importance, which leads to the challenge of long-term storage of renewable electricity. A promising option is the electrochemical conversion of biomass or carbon dioxide in chemicals as energy carrier. In this research, catalysis of the electrochemical CO2 reduction was studied to obtain liquid fuels. In this fundamental study we discovered that so-called disproportionation reactions may occur simultaneously with the CO2 reduction reaction influencing the product spectrum. Moreover, we focused on metalloprotoporphyrins immobilized on a graphite surface. We found that the selectivity can be steered toward formic acid with rhodium, tin or indium metal centers. Apart from intrinsic catalyst parameters, we studied the influence of parameters related to the immobilization and the composition of the electrolyte. We showed that the substrate and its pretreatment as well as encapsulation of the catalyst in polymers can have a signifcant influence on the electrocatalysis of CO2 reduction. The results obtained in this thesis provide insight in the energy efficiency, reaction rate and selectivity of the CO2 reduction reaction, and play an important role for the development of an industrially viable process.
Promotor: Supervisor: Koper M.T.M. Co-Supervisor: Hetterscheid D.G.H.
Faculty: Science
University: Leiden
Uri: urn:isbn:9789461828804
Handle: http://hdl.handle.net/1887/61513
 

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application/pdf Chapter 1 General introduction 968.8Kb View/Open
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application/pdf Summary and future perspectives 209.5Kb View/Open
application/pdf Summary and future perspectives in Dutch 210.9Kb View/Open
application/pdf Appendices 80.64Kb View/Open
application/pdf Appendices A 1.794Mb View/Open
application/pdf Appendices B 2.157Mb View/Open
application/pdf Appendices C 4.453Mb View/Open
application/pdf Appendices D 1.756Mb View/Open
application/pdf List of publications_Curriculum Vitae 245.3Kb View/Open
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