Abstract
HCFC and HFC were photodegraded on metal oxides. Degradation rate on several metal oxides was in the order: TiO 2ZnO > Fe 2O 3kaolin ≧ SiO 2 ≧ Al 2O 3. Principal degradation products were CO 2, Cl − and F −. Minor products which oxidize I − were included for some HCFC's. A photocatalytic process is suggested for the degradation reaction. An overall reaction equation is proposed on the basis of mass balance.
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