Electrooxidation of methanol on upd-Ru and upd-Sn modified Pt electrodes
Article Abstract:
The effect of the submonolayers of underpotentially deposited-ruthenium-modified platinum electrode (upd-Ru/Pt) adatoms and underpotentially deposited-tin-modified platinum electrode (upd-Sn/Pt) adatoms on electrooxidation of methanol in acid is investigated. The results have shown that Ru and Sn adatoms on the Pt surface plays a vital role in methanol oxidation in a different potential range and is shown that the Pt electrode modified by upd-Ru and upd-Sn adatoms display the best catalysis for methanol electrooxidation.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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A coverage-dependent study of Pt spontaneously deposited onto Au and Ru surfaces: Direct experimental evidence of the ensemble effect for methanol electro-oxidation on Pt
Article Abstract:
A coverage-dependent investigation of Pt spontaneously deposited onto Au and Ru surfaces that provide the first experimental evidence of the ensemble effect postulated for methanol electro-oxidation on a Pt surface is reported. CO stripping voltammograms show evidence of substantially strengthened CO-Pt bonding for submonolayer Pt deposited on Au substrate, which is in qualitative agreement with theoretical prediction based on Hammer-Norskov d-band center model.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
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[Pt.sub.3][Ru.sub.6] clusters supported on gamma-[Al.sub.2][O.sub.3]: Synthesis from [Pt.sub.3][Ru.sub.6][(CO).sub.21][(mu.sub.3)]-H)[(mu-H).sub.3], structural characterization, and catalysis of ethylene hydrogenation and n-butane hydrogenolysis
Article Abstract:
The supported clusters Pt-Ru/[gamma]-[Al.sub.2][O.sub.3] are prepared by adsorption of the bimetallic precursors [Pt.sub.3][Ru.sub.6][(CO).sub.21][(mu.sub.3)]-H)[(mu-H).sub.3] from CH2Cl2 solution onto gamma-[Al.sub.2][O.sub.3] followed by decarbonylation in He at 300 degree Celsius. The material was found to be an active catalyst for ethylene hydrogenation and n-butane hydrogenolysis under conditions mild to prevent substantial cluster disruption.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
User Contributions:
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