The Adsorption of CO on a Porous Pt‐Electrode in Sulfuric Acid Studied by DEMS
- 1 January 1984
- journal article
- research article
- Published by Wiley in Berichte der Bunsengesellschaft für physikalische Chemie
- Vol. 88 (1) , 6-10
- https://doi.org/10.1002/bbpc.19840880104
Abstract
The adsorption and oxidation of CO on porous Pt‐electrodes was studied with Differential Electrochemical Mass Spectroscopy (DEMS). The following results were obtained:1. When CO is removed from the solution after adsorption has taken place, the adsorbed species mainly occupies two Pt‐sites. It is oxidized within two peaks at 0.52 and 0.73 V giving CO2 thereby consuming 2 electrons. No evidence of “reduced CO” was found independent of the adsorption potential.2. When CO is present in the solution, a physisorbed species reversibly bound to one Pt‐site covers about 60% of the electrode surface. It is oxidatively desorbed at 0.85 V.Keywords
This publication has 9 references indexed in Scilit:
- Differential Electrochemical Mass Spectroscopy (DEMS) — a New Method for the Study of Electrode ProcessesBerichte der Bunsengesellschaft für physikalische Chemie, 1984
- Mass spectrometric investigation of the electrochemical behavior of adsorbed carbon monoxide at platinum in 0.2 M sulphuric acidElectrochimica Acta, 1977
- Principles of Surface ChemistryJournal of the Electrochemical Society, 1972
- Limiting oxygen coverage on platinized platinum; Relevance to determination of real platinum area by hydrogen adsorptionJournal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1971
- Use of a porous electrode for in situ mass spectrometric determination of volatile electrode reaction productsJournal of the American Chemical Society, 1971
- The Mechanism of Electrochemical Oxidation of Carbon Monoxide and Methanol on Platinum. II. The “Reactant-Pair” Mechanism for Electrochemical Oxidation of Carbon Monoxide and Methanol1The Journal of Physical Chemistry, 1964
- THE MECHANISM OF ELECTROCHEMICAL OXIDATION OF CARBON MONOXIDE AND METHANOL ON PLATINUM. I. CARBON MONOXIDE ADSORPTION AND DESORPTION AND SIMULTANEOUS OXIDATION OF THE PLATINUM SURFACE AT CONSTANT POTENTIAL1The Journal of Physical Chemistry, 1963
- A STUDY OF THE MECHANISM OF CARBON MONOXIDE ADSORPTION ON PLATINUM BY A NEW ELECTROCHEMICAL PROCEDURE1The Journal of Physical Chemistry, 1963
- A STUDY OF THE ADSORPTION OF CARBON MONOXIDE AND OXYGEN ON PLATINUM. SIGNIFICANCE OF THE “POLARIZATION CURVE”1The Journal of Physical Chemistry, 1962