𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Open circuit reduction of chemisorbed oxygen on platinum

✍ Scribed by A. Hoffman; A.T. Kuhn


Publisher
Elsevier Science
Year
1964
Tongue
English
Weight
299 KB
Volume
9
Category
Article
ISSN
0013-4686

No coin nor oath required. For personal study only.

✦ Synopsis


The open clrcmt reduction of chenusorbed oxygen on a platmum electrode m the presence of a dissolved depolarizer,,"β€Ί 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


πŸ“œ SIMILAR VOLUMES


Titration of oxygen chemisorbed on plati
✍ Fu-hsiang Tseng; J. M. White πŸ“‚ Article πŸ“… 1980 πŸ› John Wiley and Sons 🌐 English βš– 573 KB

## 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 Langmuir–Hinshelwood mechanism is found which

Cathodic reduction of adsorbed oxygen on
✍ K. Sasaki; Y. Nishigakiuchi πŸ“‚ Article πŸ“… 1971 πŸ› Elsevier Science 🌐 English βš– 623 KB

The electrolytic stripping technique has been found useful to study adsorption phenomena occurring at the metal/gas interface. The method has previously been applied to the platinumnitrogen system' and has now been applied to the platinum-oxygen system. A platinum wire with one end sealed in a soft

On the reduction of oxygen at platinumβ€”o
✍ J.P. Hoare πŸ“‚ Article πŸ“… 1975 πŸ› Elsevier Science 🌐 English βš– 693 KB

The steady-state reduction ofoxygen in O,-saturated 2 N H,SO, solution was obtalned at constant current on the front side of a Pt fo11 diaphragm before and after strong anodization of the back side. Strong anodization converts the Pt to a Pt-0 alloy. In all cases, the overvoltage for O2 reduction wa

Passivating effect of chemisorbed oxygen
✍ M.W. Breiter πŸ“‚ Article πŸ“… 1962 πŸ› Elsevier Science 🌐 English βš– 460 KB

The oxygen coverage was determined by cathodic charging curves at different potentials under the conditions of periodic, low-speed, potentiostatic current potential curves in 1 N HCIO4 with vigorous hydrogen or argon stirring between + 0"6 V and + 1"5 V. t In the case of hydrogen stirring the net cu

Reduction of oxygen on Teflon-backed pla
✍ W. Vogel; J. Lundquist; A. Bradford πŸ“‚ Article πŸ“… 1972 πŸ› Elsevier Science 🌐 English βš– 754 KB

It is not yet possible to determine in detail the precise micro-structure of porous gas electrodes. It has therefore become customary to analyse actual electrode polarization curve in terms of an electrode model. The degree of cotidence in such analyses is lessened by the fact that certain parameter