Abstract
The rates of chlorination of zinc, copper and iron at 800°C in air and chlorine mixtures were measured by thermogravimetric analysis. Scanning electron microscopy, atomic absorption spectroscopy and X-ray diffraction were used to examine and characterise the reaction products. From the results obtained at 800°C, it appears that the chlorination of zinc in air/chlorine gaseous mixture (10:1) is characterised by both mass transfer and chemical reaction control. In the case of the chlorination of copper, the activation energy was very low. For iron, it was found that there was a modest increase in weight in both air and air/chlorine mixtures due to oxidation but very little loss due to chlorination.
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