PHOTOCATALYTIC DEGRADATION OF TRACE GASEOUS ACETONE AND ACETALDEHYDE USING TIO2 SUPPORTED ON FIBERGLASS CLOTH

The feasibility of photocatalytic degradation of trace gaseous acetone and acetaldehyde using TiO2 supported on fiberglass cloth was studied . The results show that gaseous acetone and acetaldehyde can be comple tely photocatalytically degraded into CO2 and H2O, after 35 min illumi nation with a 375 W medium pressure mercury lamp. The effects of param eters such as the flow of reactant gases and the concentrations of oxy gen and water vapor in the feed stream on the photocatalytic degradati on were studied. TiO2 supported on fiberglass cloth was not easily det ached. After 150 h illumination there was no significant loss of the p hotocatalytic activity of TiO2. (C) 1998 Society of Chemical Industry.