Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 5 of 5 for “"Catalytic Activity of Platinum"”.
-
Exploration of the Structure and Catalytic Activity of Modified Platinum Substrates
… fuel cell technology has become an intense focus of the energy research community as a potentially viable alternative to emissions-producing devices. Both methanol and formic acid are promising fuels for this type of technology; however, to maintain catalytic efficiency and purity, the platinum …
-
Oxygen reduction reaction on carbon supported dispersed platinum nanoparticles and extended platinum surfaces
To date, the cost of high platinum loadings in polymer electrolyte fuel cells (PEFCs) remains one of the main deterrents preventing their broad commercialisation. The reaction of interest in this work is the oxygen reduction reaction (ORR) occurring at the cathode side of the PEFC. The ORR has been …
-
Generation of metal nanoparticles in spherical polyelectrolyte brushes and their application in heterogeneous catalysis
This thesis describes synthesis of spherical cationic polyelectrolyte brushes by “grafting from” technique. The spherical polyelectrolyte brushes have been used as “nanoreactors” for the synthesis of metal nanoparticles (Gold, Platinum and Silver). The catalytic activity of the resulting …
-
Understanding the promotion of aerobic oxidation of benzyl alcohol over Pt-based catalysts
The combination of metal catalyst with molecular oxygen (which is the cheapest and the most environmental-friendly oxidant) is undoubtedly a more benign alternative to the existing methodologies for the oxidation of alcohol substrates to aldehydes, ketones and/or carboxylic acid products. However, …
-
Relation between surface structural and chemical properties of platinum nanoparticles and their catalytic activity in the decomposition of hydrogen peroxide
The disproportionation of H₂O₂ to H₂O and molecular O₂ catalyzed by platinum nanocatalysts is technologically very important in several energy conversion technologies, such as steam propellant thrust applications and hydrogen fuel cells. However, the mechanism of H₂O₂ decomposition on platinum has …