The Transmission of Electrolytically Deposited Hydrogen Through a Palladium Membrane Electrode. II. Experimental. Oxidizing Agents and Hydrogen Gas on the Exit Side

摘要

Hydrogen was deposited electrolytically on one side (the entrance side) of a palladium membrane at a rate-i (amp/ sq. cm.). The amount of hydrogen transmitted was measured by noting the change in normality of a solution of a strong oxidizing agent, e.g., Ce(+4) or S2O8(=), on the other side (the exit side), and in other experiments by measuring the hydrogen evolved on the exit side volumetrically. The results with hydrogen on the exit side are apparently capable of description by the equations developed in Part I of this series, but the value of the diffusion coefficient obtained is lower than Barrer's value at 25C by a factor of two to three. Possible reasons for this discrepancy are discussed briefly. (Author)