HYDROGEN ISOTOPE SEPARATING ALLOY AND SEPARATION OF HYDROGEN USING THE ALLOY

摘要

PURPOSE: To separate a hydrogen isotope by using a hydrogen storage alloy capable of efficiently separating each hydrogen isotope by the occlusion and discharge of hydrogen. ;CONSTITUTION: This alloy has a C¹⁴ type crystal structure of laves phase and is the hydrogen storage alloy capable of successively occluding or discharging hydrogen isotopes by the equilibrium occlusion pressure difference between the plural hydrogen isotopes or the equilibrium occlusion pressure difference or equilibrium discharge pressure difference between the plural hydrogen isotopes in accordance with the pressure change. Besides, a gaseous mixture of protium and deuterium is brought into contact with the alloy at a specified temp. at a pressure lower than the equilibrium occlusion pressure of protium and higher than that of deuterium to occlude deuterium in the system, the protium present in the system is separated from the system, the pressure of the system is set above a pressure lower than the equilibrium discharge pressure of deuterium to discharge deuterium from the alloy, and protium and deuterium are separated in this way.;COPYRIGHT: (C)1993,JPO&Japio