โ Scribed by R.E. Sioda
No coin nor oath required. For personal study only.
Recently there has been a growing interest in continous electrolysis conducted on porous electrodes with flowing solutions (EPF). Both the experimental and theoretical aspects of this process have been described 1-20. It seems that the potential practical applications of this electrochemical technique have stimulated investigations. Previous papers 15 -~ 9 have been concerned with the formation of a limiting current in EPF. A mathematical model of the limiting current has been described and compared with the experimental results obtained for a porous electrode of rather irregular shape, built of fine platinum grid rolled together ~7'~9. In the present paper a porous electrode of a regular geometrical shape is described. It is composed of a variable number of parallel platinum grids. The limiting currents measured on this electrode, under conditions of solution flow, have been compared with the predictions of the mathematical model derived earlier.
๐ SIMILAR VOLUMES
Electrolysis on a porous electrode with a flowing solution (e.p.f.) is a new field in electrochemistry. Several experimental arrangements have been proposed for this type of electrolysis 1-9, which so far has been recommended for analytical applications 2-6 and for the production of radical ions 6'9
A simplified theoretical model of the electric potential distribution in a porous electrode, working with limiting current and with flowing solution, is described. The model is based on several approximations, eg uniform flow velocity in the porous electrode. Equations are derived for the potential
The elect&y& of potassium p-nitrobenzoate in alkaline aqueous solution in a flow electrolytic cell employing a platinum grid porous electrode is described. The composition of the solution after the electrolysis was controlled by means of voltammetry on a platinum wire microelectrode. According to th