CATALYTIC PROPERTIES OF ALUMINAS OBTAINED FROM HYDRARGILLITE IRRADIATED WITH $gamma$ RAYS OR NEUTRONS

The catalytic activity, with respect to the decomposition of formic acid, of an alumina obtained by the calcination of hydrargillite is increased when this trihydrate is irradiated by neutrons or rays. The physicochemical properties and the selectivity are equally modified. (tr-auth)