Mcma. Ferraz et al., Control of atmospheric emissions of volatile organic compounds using impregnated active carbons, FUEL, 78(13), 1999, pp. 1567-1573
The combination of carbon adsorption with catalytic complete oxidation for
control of emissions of n-hexane, 2,3-dimethylbutane, cyclohexane and benze
ne is analysed in this paper. The activities of activated carbons prepared
with almond shells and impregnated with CoO, Co3O4 and CrO3 were compared,
in relation with carbon structure, catalyst content and catalyst species. T
he microcatalytic-chromatographic technique developed was very suitable for
rapid comparison of catalytic activities, that are higher for carbons with
a better development of surface area and pore volumes, and increased with
increasing catalyst content. Catalytic activity of cobalt is better than th
at of chromium, the oxidation state of cobalt in Co3O4 being better than in
CoO. The catalytic activity depends clearly on the hydrocarbon chemical st
ructure. (C) 1999 Elsevier Science Ltd. All rights reserved.