Process for the exchange of hydrogen isotopes between...

Details Process for the exchange of hydrogen isotopes between... Process for the exchange of hydrogen isotopes between...

B - Operations, Transporting

01

J

252/121, 23/339,

B01J 10/00 (2006.01) B01D 59/32 (2006.01) B01J 19/32 (2006.01)

Patent

CA 1158224

ABSTRACT OF THE DISCLOSURE Hydrogen isotope (e.g. deuterium) exchange from liquid water to a gaseous halohydrocarbon (e.g. fluorform, CF3H-CF3D) is obtained at an operating temperature in the range 0 to 100°C using a catalytically active mass comprising a porous anion exchange resin in the hydroxide ion form and the enriched gaseous halohydrocarbon streams is decomposed by isotope selective photo-decomposition into a first, gaseous stream enriched in the hydrogen isotope, which is removed as a product, and a depleted gaseous halohydrocarbon stress, which is recirculated for enrichment again. The catalytically active mass may, for example, be in the form of resin particles suspended in a fluidized bed or parked as resin particles between sheets wound into a roll. One of the sheets may be corrugated and have open interstices to form a packing in a column which permits countercurrent gas and liquid flow past the resin. Pre- ferably the wound sheets are hydrophilic to retard flooding by the liquid water. The liquid water stream may contain dimethyl sulfoxide (DMSO) added as co-solvent.

391537

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