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Showing 1 to 9 of 9 for “"platinum surfaces"”.
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Fundamental Studies of Hydrocarbon Organization and Reactivity on Platinum Surfaces
Interestingly, all the unsaturated cyclic hydrocarbons studied (C$\sb5$-C$\sb8$) dehydrogenate to some extent to form planar intermediates in varying yields.
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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 …
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Ethanol and Fluorinated Ethanol Decomposition on Single Crystal Platinum Surfaces: Structure Sensitivity and Electronic Effects
To study the surface work function effect on the surface reaction mechanism, ethanol and fluorinated ethanol decomposition have also been studied on clean and oxygen precovered (2 x 1)Pt(110) surface. The reaction mechanism is very similar on clean (2 x 1)Pt(110) as on Pt(331), except the ethanol …
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Nuclear magnetic resonance study of the bonding of carbon monoxide to palladium and platinum surfaces
The 13c and 17o NMR of CO chemisorbed on small particles of Pd and Pt has been observed. The 17o resonance represents the first reported NMR observation of a spin larger than 1/2 adsorbed on a metal surface. At low temperatures, the 13c resonance of CO on Pd is centered at 540 ppm down field from …
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Nuclear Magnetic Resonance Study of the Bonding of Carbon-Monoxide to Palladium and Platinum Surfaces (Nmr)
The ('13)C and ('17)O NMR of CO chemisorbed on small particles of Pd and Pt has been observed. The ('17)O resonance represents the first reported NMR observation of a spin larger than 1/2 adsorbed on a metal surface.
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Adsorption of oxygen molecules on platinum surfaces modified with subsurface atoms of vanadium : a DFT study
… changes in the electronic structure of platinum as a result of alloying with vanadium, and the effects of these changes on O2 adsorption. This is important for the further development of hydrogen fuel cells, because the oxygen reduction reaction (ORR) presently requires O2 adsorption to …
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Structure Sensitivity of Ethylene Adsorption on Platinum (Dehydrogenation)
… structure sensitivity of ethylene adsorption on platinum surfaces. Temperature Programmed Desorption (TPD), Electron Energy Loss Spectroscopy (EELS), Low-Energy Electron Diffraction (LEED) and Auger spectroscopy are applied to study the adsorption of ethylene on the square (1 x 1)Pt(100) and on …
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Exploration of the Structure and Catalytic Activity of Modified Platinum Substrates
… to maintain catalytic efficiency and purity, the platinum anode must be modified by another metal, altering the electronic and catalytic properties of the platinum favorable toward methanol or formic acid oxidation. Palladium is known to enhance the catalytic activity of platinum towards formic …
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High-speed electrochemistry using ultramicroelectrodes
… studied in this work are the oxidation of clean platinum surfaces, electrode reactions of anthraquinone-2,6-disulfonic acid adsorbed on mercury, reductive hydrogen adsorption on platinum and double layer charging. (e) A study of the smallest available time constants was performed, taking into …