The determination of the protium-deuterium electrolytic separation factor by infrared-cryogenic gas chromatography method

A method IR-CGC (infrared-cryogenic gas chromatography) was established directly through the combination of infrared spectrum (IR) and cryogenic gas chromatography (CGC) to measure the electrolytic separation factor (α) between protium and deuterium. The n1,liq(D)/n2,liq(H) ratio of alkalic aqueous solution after electrolysis was tested quantitatively by the IR method, and the n1,gas(D)/n2,gas(H) ratio of mixed gases from electrolysis was determined by CGC. Then α of different electrode materials were obtained according to the formula of electrolytic separation factor. As a result, it provides an accurate, simple, feasible, suitable approach for evaluating the electrolytic protium-deuterium separation ability of different electrode materials, which is helpful for searching excellent hydrogen isotopes separation materials.