✍ Scribed by M.E. Martins; A.J. Calandra; A.J. Arvía
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The inff uence of temperature on the hydrogenltritium separation factor, S,, has been determined at mercury cathodes in concentrated HCl solutions[l], and at mercury and nickel cathodes in methanolic HCICZ]. The hydrogen evolution reaction on mercury is governed by the hydrogen ion discharge and proton tunnelling effects are evidenced by means of the H/T separation factor[3-51.
This preliminary report concerns with the H/T separation factor on bright platinum electrodes, a particularly active metal for the hydrogen electrode reaction, measured in the range of temperature from -50 to 60°C. For the purpose 38 and 85 per cent H2S04 aqueous solutions[6], containing IO&i/ml oftritiated water, were employed. The current efficiencies for the hydrogen reaction were, at current densities up to 10 mA/cm', practically 100 per cent at temperatures below 40°C. At higher temperatures sulphur formation occurred affecting thus the current efficiency for the hydrogen evolution.
The hydrogen formed by electrolysis was oxidised to water and the tritium content of the sample, as well as those
📜 SIMILAR VOLUMES
We have studied the influence of pressure and temperature on the detonability of hydrogen-air-diluent mixtures diluted with steam or carbon dioxide. Detonation cell width measurements have been obtained from experiments conducted in a 0.43-m-diameter heated detonation tube. Calculations from a Zeldo