Treatment of toluene present in trace amounts in air,in the presence of Cu-catalysts bentonite [Traitement du toluène présent à l'état de traces dans l'air,en présence de catalyseurs cu-bentonite]

The air pollution is a problem that is becoming increasingly important,resulting in a significant development of research in the field of volatile compounds in general. volatile organic compounds are dangerous pollutants for human health and harmful for the environment. the elimination of these compounds at low concentrations in the air by catalytic oxidation is a promising approach that allows their destruction selectively and at low temperatures. the search for new catalytic systems adapted to the nature of the voc process is an important issue. the objective of this study was to compare the effectiveness of various solid catalysts for the removal of vocs present in trace amounts in air. we examined the effect of the amount of copper oxide deposited on a moroccan bentonite,treatment of trace toluene in air. the addition of increasing amounts of copper has a positive effect on the activity and selectivity of the catalyst. we have shown that it was not appropriate to file too much copper in bentonite and an amount of 5% cuo enough to oxidize toluene to co2 and h2o at low temperature. these results are likely explained by a better dispersion of the copper oxide particles to the surface of the clay.