Electrooxidation of small organic molecules on polycrystalline platinum electrode in aqueous acid solution using on-line MS study
| Autoři | |
|---|---|
| Rok publikování | 2001 |
| Druh | Článek ve sborníku |
| Konference | Proceedings of the 19th Informal Meeting on Mass Spectrometry |
| Fakulta / Pracoviště MU | |
| Citace | |
| Obor | Elektrochemie |
| Klíčová slova | formic acid; N;N-dimethylformamide; electro-hydrogenation; electro-oxidation; DEMS; voltammetry; mass spectrometry |
| Popis | The electrochemical cell and mass spectrometer combination - differential electrochemical mass spectrometry (DEMS) - was used for detection, identification and observation in time of volatile and semivolatile species during the electrochemical polarisation of a working electrode. DEMS is a type of experimental technique, which makes possible an investigation of electro-sorption, electro-oxidation and electro-hydrogenation processes of molecules like aromatic hydrocarbons, some other small organic molecules and reaction intermediates. As a test system the electrochemical oxidation of formic acid and dimethylformamide in 0,5 M sulfuric acid on polycrystalline Pt electrode was studied. The results are presented as a plot of ion current of selected masses of expected products as function of working electrode potential. The faradaic current-potential curves were measured simultaneously. |
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