Photodegradation of chlorofluorocarbon alternatives on metal oxide

Journal Article · Sun May 01 00:00:00 EDT 1994 · Solar Energy (Journal of Solar Energy Science and Engineering); (United States)

DOI:https://doi.org/10.1016/0038-092X(94)90122-I· OSTI ID:7185141

Tanaka, K; Hisanaga, T ^[1]

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1. National Institute of Materials and Chemical Research, Tsukuba (Japan)

HCFC and HFC were photodegraded on metal oxides. Degradation rate on several metal oxides was in the order: TiO[sub 2] > ZnO > Fe[sub 2]O[sub 3] > kaolin [ge] SiO[sub 2] [ge] Al[sub 2]O[sub 3]. Principal degradation products were CO[sub 2], Cl[sup [minus]] and F[sup [minus]]. Minor products which oxidize I[sup [minus]] 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.

• OSTI ID: 7185141
• Journal Information: Solar Energy (Journal of Solar Energy Science and Engineering); (United States), Vol. 52:5; ISSN 0038-092X
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
54 ENVIRONMENTAL SCIENCES
CHLOROFLUOROCARBONS
MATERIAL SUBSTITUTION
PHOTOLYSIS
COMPARATIVE EVALUATIONS
METALS
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
EVALUATION
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
400500* - Photochemistry
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)