Hydrogen isotope separation in hydrophobic catalysts between hydrogen and liquid water

Hydrogen isotope catalytic exchange between hydrogen and liquid water is a very effective process for deuterium-depleted potable water production and heavy water detritiation. To improve the characteristics of hydrophobic catalysts for this type of reaction, foamed and cellular structures of hydrophobic carbon-supported platinum catalysts were successfully prepared. Separation of deuterium or tritium from liquid water was carried out by liquid-phase catalytic exchange. At a gas liquid ratio of 1.53 and exchange temperature of 70 degrees C, the theoretical plate height of the hydrophobic catalyst (HETP =34.2 cm) was slightly lower than previously reported values. Changing the concentration of the exchange column outlet water yielded nonlinear changes in the height of the packing layer. Configurations of deuterium-depleted potable water and detritiation of heavy water provide references for practical applications. (C) 2015 Elsevier B.V. All rights reserved.