Catalysis of CO electrooxidation at Pt, Ru, and PtRu alloy. An in situ FTIR study

Article Abstract:

Fourier transform infrared spectroscopy is used in studying the electrooxidation of carbon monoxide using polycrystalline Pt and Ru as well as a 50:50 PtRu alloy as catalysts. Results indicate that there are significant differences between oxidative stripping and bulk CO electrooxidation. Compact islands of pure Pt and Ru and a loose adlayer of the alloy are observed to be formed during the electrooxidation of CO. The loose structure has been noted to have a positive influence on the rate of oxidative desorption of CO.

Research, Carbon monoxide, Catalysis

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Oxidation kinetics in iron and stainless steel: An in situ X-ray reflectivity study

Article Abstract:

The growth kinetics of passive films on iron and stainless steel substrates in pH 8.4 borate buffer solution is investigated using in situ specular X-ray reflectively. It is observed that the oxide growth rate decays exponentially with increasing oxide thickness consistent with the point defect model in which the electric field in the oxide is maintained constant during growth.

Iron and Steel Mills, Blast furnaces and steel mills, Stainless Steel, Iron, Iron (Metal), Steel, Stainless

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Synthesis and characterization of Pt-WO(sub 3) as methanol oxidation catalysts for fuel cells

Article Abstract:

Pt-WO(sub 3) catalysts are electrochemically synthesized with a wide range of compositions, and their activity toward the methanol oxidation reaction is investigated. The Pt-specific surface area is determined by the Cu-UPD method, which is sensitive to Pt sites but not the surrounding WO(sub 3) matrix.

Electrochemical analysis, Platinum catalysts

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