Chlorination-disproportionation of Al4O4C and Al4C3 in vacuum

Abstract The chlorination-disproportionation of Al 4 O 4 C and Al 4 C 3 in vacuum was investigated by thermodynamic analysis and experiments using the side products of the AlCl disproportionation process of alumina, consisting of Al 4 O 4 C, Al 4 C 3 , Al 2 O 3 and C, as raw materials. It was demonstrated that the chlorinations of Al 4 O 4 C and Al 4 C 3 with AlCl 3 in vacuum are thermodynamically favorable, and their kinetics feasibilities were supported by the experiments at 1643 K–1843 K. The metallic aluminum obtained in the experiments contained a certain carbon formed from the disproportionation of CO.