CHARACTER OF HYDROGEN INTERACTION WITH COPPER CHROMITE

Hydrogen bonding kinetics have been studied and water amounts produced in H-2 interaction with copper chromite CuCr2O4 determined. Two possi ble interaction mechanisms are suggested: (1) a mechanism involving so lid phase oxygen accompanied by water formation; (2) direct redox copp er displacement from chromite by hydrogen that requires no oxygen. Ini tially, when the reaction occurs mainly on the surface, up to 40% of h ydrogen is converted according to the first mechanism. Then, the proce ss mainly occurs in the bulk via the second mechanism. Hydrogen sorpti on by copper chromite proved to be reversible.