Abstract

AbstractAn investigation was made of the possibility of separating ferric and aluminium chlorides by heating mixtures of these chlorides with graphite. This scheme of separation was based on reports of other investigators who claimed that graphite formed lamellar complexes with ferric chloride but not with aluminium chloride. It was found, however, that graphite occludes aluminium chloride and also aluminium chloride and ferric chloride together. The stabilities of both these new complexes were examined and the compositions of the mixed ferric chloride–aluminium chloride complexes were also studied. It was concluded, from distribution studies, that a separation of both chlorides by heating mixtures of them with amounts of graphite in suitable proportion to the ferric chloride present is feasible, and of possible value in the industrial chlorination of ferruginous aluminium ores.

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