Abstract
CrO3 supported on porous carbonaceous adsorbent and γ‐alumina was used between 200 and 400 °C to oxidise CH2Cl2. The following parameters were studied in a fixed bed integral reactor: type of support, temperature, spatial rates and amounts of CH2 Cl2 in air. The kinetic study of the reaction revealed an order one with respect to CH2 Cl2 and a Mars‐Van Krevelen mechanism appeared quite satisfactory for explaining the experimental results. Conversions of CH2Cl2 as high as 99% were achieved at 340°C on CrO3/γ‐Al2O3 at concentration up to 15000 ppm CH2Cl2 in air.
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