<div class="csl-bib-body">
<div class="csl-entry">Rüscher, M. (2021). <i>Mass transport effects on product distribution during electrochemical CO2 reduction in a custom-designed rotating cylindrical electrode cell</i> [Diploma Thesis, Technische Universität Wien]. reposiTUm. https://doi.org/10.34726/hss.2021.63882</div>
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dc.identifier.uri
https://doi.org/10.34726/hss.2021.63882
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/16789
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dc.description
Zusammenfassung in deutscher Sprache
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dc.description
Abweichender Titel nach Übersetzung der Verfasserin/des Verfassers
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dc.description.abstract
As the global energy demand is rising continuously and the fossil fuel depletion is advancing, new technologies are needed to meet the challenges the energy industry is facing. Progress in the field of renewable energies has grown steadily. However, it is still critical to accelerate progress in the economic viability of these technologies. In the near future, no single renewable technology will be able to compete with fossil fuels. The task is to establish an infrastructure to jointly utilize energy from many different areas of renewable energy in a sustainable manner. In this work a promising field of research - the electrochemical reduction of carbon dioxide (CO2RR) - will be discussed. This reaction can potentially produce various C2+ carbohydrates, oxygenates and other carbon moieties that can be used as fuels or as basic chemicals needed in the chemical industry. The input required for this reduction is simply electricity and the reactants carbon dioxide and water. Carbon dioxide (CO2) is a major greenhouse gas that contributes to climate change and rising temperatures and exhibits an increasing concentration in the atmosphere. The local removal of CO2 from industrial exhaust gases or the direct extraction from the air not only generates the main reactant of this reaction but also contributes in reducing its occurrence in the atmosphere to a moderate level. The second reactant, water, is abundant. The aim would be to minimize the overpotential required for this reaction and to convert excess electricity fromrenewable energy sources such as solar and wind into chemicals with a high energy density. This thesis focuses on mass transfer effects during electrochemical CO2 reduction in a successfully designed gas-tight electrochemical cell with an integrated rotating cylindrical electrode. The application of the reduction of potassium ferricyanide was used to quantify the hydrodynamics of the rotation cell. By conducting experiments on CO2RR at different rotation speeds and electrolyte concentrations a deeper understanding of the reaction mechanism and the influence of mass transport effects on product selectivity was gained. A mathematical model was developed to rationalize that obtained data. The insights helped to further develop an advantageous experimental set-up that will add to achieve the goal of lowering overpotentials, and thus, reduce the electricity input needed. This will lead to lower costs of this technology making it more competitive in the field of energyalternatives on the road to replace fossil resources.
en
dc.language
English
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dc.language.iso
en
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dc.rights.uri
http://rightsstatements.org/vocab/InC/1.0/
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dc.subject
CO2-reduction
en
dc.subject
rotating cylinder electrode
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dc.title
Mass transport effects on product distribution during electrochemical CO2 reduction in a custom-designed rotating cylindrical electrode cell
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dc.title.alternative
Einfluss des Stofftransports auf die Produktverteilung bei der elektrochemischen Reduktion von CO und CO2
de
dc.type
Thesis
en
dc.type
Hochschulschrift
de
dc.rights.license
In Copyright
en
dc.rights.license
Urheberrechtsschutz
de
dc.identifier.doi
10.34726/hss.2021.63882
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dc.contributor.affiliation
TU Wien, Österreich
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dc.rights.holder
Martina Rüscher
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dc.publisher.place
Wien
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tuw.version
vor
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tuw.thesisinformation
Technische Universität Wien
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tuw.publication.orgunit
E164 - Institut für Chemische Technologien und Analytik
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dc.type.qualificationlevel
Diploma
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dc.identifier.libraryid
AC16132314
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dc.description.numberOfPages
59
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dc.thesistype
Diplomarbeit
de
dc.thesistype
Diploma Thesis
en
dc.rights.identifier
In Copyright
en
dc.rights.identifier
Urheberrechtsschutz
de
tuw.advisor.staffStatus
staff
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item.fulltext
with Fulltext
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item.cerifentitytype
Publications
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item.mimetype
application/pdf
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item.openairecristype
http://purl.org/coar/resource_type/c_bdcc
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item.languageiso639-1
en
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item.openaccessfulltext
Open Access
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item.openairetype
master thesis
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item.grantfulltext
open
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crisitem.author.dept
E226-01 - Forschungsbereich Wassergütewirtschaft
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crisitem.author.parentorg
E226 - Institut für Wassergüte und Ressourcenmanagement