## Abstract The titration of chemisorbed oxygen by carbon monoxide to form carbon dioxide has been studied from 373 to 673 K over polycrystalline platinum. The pressure transients for CO and CO~2~ have been measured and simulated numerically. A complex LangmuirβHinshelwood mechanism is found which
Open circuit reduction of chemisorbed oxygen on platinum
β Scribed by A. Hoffman; A.T. Kuhn
- Publisher
- Elsevier Science
- Year
- 1964
- Tongue
- English
- Weight
- 299 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0013-4686
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β¦ Synopsis
The open clrcmt reduction of chenusorbed oxygen on a platmum electrode m the presence of a dissolved depolarizer,,"βΊ such as formic acid, IS shown to proceed by a purely electrochemical mechamsm It IS UMecessary to invoke an lmtial purely chemical reduction The concept of such a reduction 1s not supported by the measured rate of reaction R&urn&Dam le present essru, 11 est dbmontre que la r&luction d'oxygbne chumsorM sur une &&rode en platme hors arcmt, en pr&ence d'un depolanseur tel que l'aade fonmque, se product par un m&amsme purement &ctrochumque I1 y est Qalement montre qu'd n'est pas n&ssare d'avorr recours B une redution uutlale purement chnmque L'ldBe d'une telle r6ductlon n'est pas confirm& par la vltesse de tictlon mesur&. Zwammenfasaung-Es wn-d gezeigt, dass die Reduktlon von chemlsorblertem Sauerstoff an emer Platm-Elektrode, lm offenen Stromkreise, m Gegenwart emes gelosten Depolansators wie z B Amelsensaure als rem elektrochermscher Prozess verlauft Es erwelst such als unnotlg, eme anfanghche, rem chermsche Reduktlon anzunehmen, wle das kurzhch von zwei Autoren vorgeschlagen wurde, und eme solche Reduktlon wlrd durch die gemessene Reaktlonsgeschwmdlgkelt mcht gestutzt
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