REDUCTION OF NIAL2O4 CONTAINING CATALYSTS FOR STEAM METHANE REFORMINGREACTION

Reducibility of a NiAl2O4 containing catalyst was studied. On a measur ement of NiAl2O4 concentration in a catalyst, a peak area ratio of NiA l2O4 in XRD analysis was verified to express the NiAl2O4 concentration . The reducibility of NiAl2O4 was confirmed to be dependent on the cal cining temperature to form NiAl2O4, not dependent on the calcining tim e. The catalyst containing NiAl2O4 was ascertained to be reduced under convenient conditions to actual plant operations; H-2/N-2 = 30/70 at 1023 K for 1 h + steam/CH4 = 6 at 1023 K for 17 h. (C) 1997 Internatio nal Association for Hydrogen Energy.