EVALUATION OF THE ISOTOPE SEPARATION RATE OF DEUTERIUM EXCHANGE REACTION BETWEEN H₂ AND H₂O WITH PLATINUM CATALYST

Abstract

The high performance catalysts of hydrophobic carrier with fully dispersed platinum were used to measure the isotope separation performance of hydrogen by the chemical exchange method. The continuous injection of oxygen on the order of 10³ppm was effective in regenerating catalyst activity and in maintaining high performance for a long time.
The separation performance in a trickle bed column should be evaluated by using two parameters, K₉ and K_l. These two parameters were unified to the overall transfer coefficient K_fg, which may be sufficient in the estimation of overall performance or the design of a separation plant by the chemical exchange method.
When one wants to increase the transfer rate in a chemical exchange column, the improvement of K_l rather than K_g may be more effective in increasing the overall transfer rate (its coefficient is expressed by K_fg in this paper).