Suppression of nitrogen oxide dissociation by gold on Pt(335)

Article Abstract:

Temperature-programmed desorption method is used to analyze the working of prototype NO (sub x) sensors when Au/Pt electrode is present in automotive exhaust. Study of dissociation reaction of NO and O2 on Pt(335) and on partially Au covered Pt(335) report that the Au/Pt electrode in a NO (sub x) sensor is able to dissociate oxygen 10(super 3) times more efficiently than NO, which give indication for the development of new emission control systems.

Author: Fisher, Galen B., Lambert, David K., DiMaggio, Craig L., Wang, Hong, Skelton, D.C., Tobin, R.G.
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2001
Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Platinum, Gold, Analysis, Electric properties, Electrodes, Dissociation, Dissociation reactions

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Oxidation of CO on gold-covered Pt(335)

Article Abstract:

A study was conducted to analyze the absorption and reaction of oxygen and carbon monoxide on a stepped platinum surface with different amounts of gold. Temperature-programmed desorption and reaction and low-energy electron diffraction were utilized to carry out the analysis. High-resolution electron energy loss spectroscopy was also used to determine the absorption and reaction properties. Results indicated the existence of completely gold-covered regions and regions with gold on the step edges.

Author: Fisher, Galen B., Lambert, David K., DiMaggio, Craig L., Skelton, D.C., Tobin, R.G.
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
Research, Oxidation-reduction reaction, Oxidation-reduction reactions, Carbon monoxide

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Subjects list: Platinum, Gold
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