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University of Illinois at Urbana-Champaign
Electrocatalysis in Alkaline Media: Mechanistic Studies of Fuel Cell Reactions on Well-Defined Model Catalysts
Abstract
dc:descriptionRu was found to promote both methanol dehydrogenation and CO oxidation on adjacent Pt sites. Ru enhances methanol dehydrogenation through two distinct ligand effects: it increases the intrinsic dehydrogenation activity of adjacent Pt sites, and it causes CO to diffuse away from these active sites, decreasing the CO poisoning effect. A Ru ligand effect also enhances CO oxidation by weakening the Pt-CO bond. Ru supplies adsorbed OH for bifunctional CO oxidation, but since Pt defects can also supply OH in alkaline media, the Ru bifunctional effect is less significant than the three ligand effects.
Degree
thesis:*- Name thesis:degree_name
- Ph.D.
- Level thesis:degree_level
- Dissertation
- Discipline thesis:degree_discipline
- Chemical and Biomolecular Engineering
- Grantor
- University of Illinois at Urbana-Champaign
- Year dc:date
- 2015
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Spendelow, Jacob S.
- Contributors dc:contributor
-
- Kenis, Paul J.A.
- Wieckowski, Andrzej
Subjects
dc:subject × 1Rights
- Language dc:language
- eng
Identifiers
dc:identifier.*- Identifier
- (MiAaPQ)AAI3243002
- OAI identifier oai:identifier
- oai:www.ideals.illinois.edu:2142/82388