Abstract
Aluminum is violently dissolved in the various liquid organic halides after induction period. In the present experiment, the amount of dissolution according to reaction period per unit surface area of aluminum plate was first observed, and it was found that the order of dissolution reaction was zero when carbon tetrachloride, trichloroethylene, tetrachloroethane etc. were emploied. In various halogenated hydrocarbons, aluminum was most violently dissolved, generating hydrogen halide gas. It seemed that catalytic action of aluminum halide is accompanied by that of hydrogen halide. By using carbon tetrachloride at higher temperature than 50°C dissolution velocity was very fast because of catalytic action of aluminum chloride. No obvious dissolution took place at lower temperature than 45°C even after 500 minutes of reaction period. The apparent activation energy of dissolution was also calculated and dissolution mechanism discussed.
