Studiecentrum Voor Kernenergie, S.c.k.

Roger F Leysen

Philippe Vermeiren

Aime E Bruggeman

Gustaaf J Spaepen

Leon H Baetsle

Jan-Baptist Hugo Vandenborre

Marcel Monsecour

Carrier particles whereon a metal from the group VIII of the periodic element system is fixed are dry-mixed with particles from hydrophobic material which is simultaneously a binder and may thus bind the carrier particles together. The thus obtained mixture is subjected to an agglomeration step. The resulting agglomerates are broken. The broken agglomerates are screened and that fraction with a grain size smaller than 1 mm is pressed into a cake at a pressure of 25 kg/cm.sup.2 at the most. The press cake is rolled and catalyst particles are cut from the rolled cake. The catalyst particles are mixed with hydrophilic particles. The thus obtained mixture is used in an isotopic exchange column for separating tritium from aqueous effluents. In this column the effluents are lead in counter-current to gaseous hydrogen.

Method for preparing a catalyst for an isotopic exchange column

The method comprises the steps of preparing a solution of a binder in a solvent, wetting and grinding polyantimonic powder, forming a suspension with the wetted and ground powder and the solvent, mixing the suspension with the solution, pouring on a plate the so obtained viscous liquid, allowing the solvent to evaporate until a membrane in formation begins to dry, removing further the solvent by lixiviation, and removing the membrane from the plate.

Method of preparing a membrane consisting of polyantimonic acid powder

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Mol, Belgium

Roger F Leysen