Preparation of Aluminium Chloride in a Fluidized Bed

Preparation of Aluminium Chloride in a Fluidized Bed. Assemble an apparatus as shown in Fig. 121. Place 25 g of dry aluminium oxide onto porous chamotte partition 2 of quartz reactor 1 and 200-250 ml of carbon tetrachloride into flask 4. Pass a stream of dry nitrogen into the apparatus via tube 3 at such a rate that a flame of the metal oxide appears at a distance of 30-50 mm from the edge of the horizontal bend of the reactor. 

Switch on furnace 5 and raise the temperature in the reactor up to 850-900 °C. Heat the carbon tetrachloride in a water bath up to 

60-65 °C. If a blue or blue-black colour appears in receiver 6 (explain its origin), lower the evaporation temperature of the carbon tetrachloride to 50 °C. Perform chlorination during 15 minutes. 

After completing chlorination, disconnect receiver 6 with the sublimed product and rapidly transfer it into a dry chamber or a large desiccator filled with dry carbon dioxide. Spill the obtained substance into a weighed drawn out test tube and seal the latter. Weigh the ampoule with the substance and the remaining part of the tube. Calculate the yield in per cent. 

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