Collect. Czech. Chem. Commun. 1979, 44, 2480-2486

Effect of admixtures on the formation of NiAl2O4 by solid phase reaction

Jiří Macák and Bohumil Koutský

Department of Coke and Gas Technology, Prague Institute of Chemical Technology, 166 28 Prague 6


The effect of silicon and of subgroups IVb-VIIIb elements on the rate of the reaction NiO + Al2O3 = NiAl2O4 proceeding in the solid phase in a powder system at 1 100-1 300 °C was examined. A remarkable accelerating effect was found for V(V) and Ti(IV), whereas retardation of the NiAl2O4 formation was observed with Mo(VI) and Cr(III). The activation energies of the reaction in the presence of the various admixtures were determined.