Abstract
Wet chemical methods were used in combination with in situ infrared spectroscopy to identify and quantify soluble products formed during ethylene glycol electrochemical oxidation on platinum. A small volume electrolysis technique allowed reactions to be performed in samples of 150 μl in contact with a small, bead-type single crystal electrode. Following reaction, 50-100 μl aliquots were assayed for aldehydes and carboxylic acids. Glycolaldehyde (HOCH2CHO), and glycolic (HOCH2COOH) and oxalic ((HOOC)2) acids were detected following the 360 s electrolysis of 0.2 M ethylene glycol in 0.1 M HClO4 at potentials in the range 0.0-0.6 V (vs. SCE). Determination of the carboxylic acids by ion chromatography aided the assignment of carboxylate vibrational bands in in situ infrared spectra.
Original language | English |
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Pages (from-to) | 1147-1152 |
Number of pages | 6 |
Journal | Electrochimica Acta |
Volume | 44 |
Issue number | 6-7 |
DOIs | |
State | Published - Nov 1 1998 |
Keywords
- Ethylene glycol
- Infrared spectroscopy
- Organic oxidation reactions
- Oxidation
- Platinum