Mechanism of photocatalytic oxidation of gaseous ethanol
-
C. Shao
,
D. Pan
Abstract
A photocatalytic film reactor with a titanium dioxide film was used for oxidation of gaseous ethanol at 253.7 nm. The influences of partial pressures of oxygen and water vapour in different carrier gases were studied. The rate of photocatalytic oxidation of ethanol was significantly affected by the content of oxygen but water vapour had no effect. It was suggested that the photocatalytic transformation of ethanol follows a direct oxidation mechanism where the interaction of ethanol with positive hole gives first cationic free radical of ethanol, which is converted by multipathway reactions with oxygen to acetaldehyde, ethyl formate, and ethyl acetate.
[1] Fujihira, M., Satoh, Y., and Osa, T., Nature 293, 206 (1981). http://dx.doi.org/10.1038/293206a010.1038/293206a0Search in Google Scholar
[2] Mattews, R. W., J. Phys. Chem. 91, 3328 (1987). http://dx.doi.org/10.1021/j100296a04410.1021/j100296a044Search in Google Scholar
[3] Turchi, C. S. and Ollis, D. F., J. Catal. 122, 178 (1990). http://dx.doi.org/10.1016/0021-9517(90)90269-P10.1016/0021-9517(90)90269-PSearch in Google Scholar
[4] Peierson, M. W. and Nozik, A. J., J. Phys. Chem. 95, 221 (1991). http://dx.doi.org/10.1021/j100154a04410.1021/j100154a044Search in Google Scholar
[5] Mills, A., Morris, S., and Davies, R., J. Photochem. Photobiol., A 70, 183 (1993). http://dx.doi.org/10.1016/1010-6030(93)85040-F10.1016/1010-6030(93)85040-FSearch in Google Scholar
[6] Draper, R. B. and Fox, M. A., Langmuir 6, 1396 (1990). http://dx.doi.org/10.1021/la00098a01310.1021/la00098a013Search in Google Scholar
[7] Jaeger, C. D. and Bard, A. J., J. Phys. Chem. 83, 3146 (1979). http://dx.doi.org/10.1021/j100487a01710.1021/j100487a017Search in Google Scholar
[8] Bickley, R. I. and Stone, F. S., J. Catal. 31, 389 (1973). http://dx.doi.org/10.1016/0021-9517(73)90310-210.1016/0021-9517(73)90310-2Search in Google Scholar
[9] Bickley, R. I., Munuera, G., and Stone, F. S., J. Catal. 31, 398 (1973). http://dx.doi.org/10.1016/0021-9517(73)90311-410.1016/0021-9517(73)90311-4Search in Google Scholar
[10] Shiraishi, F. and Kawanishi, C., J. Phys. Chem., A 108, 10491 (2004). 10.1021/jp047873qSearch in Google Scholar
[11] Shiraishi, F., Nakasako, T., and Hua, Z. Z., J. Phys. Chem., A 107, 11072 (2003). 10.1021/jp036237+Search in Google Scholar
[12] Richard, C., J. Photochem. Photobiol., A 72, 179 (1993). http://dx.doi.org/10.1016/1010-6030(93)85026-510.1016/1010-6030(93)85026-5Search in Google Scholar
[13] Takashi, T., Sachiko, T., and Kiyohiko, K., J. Phys. Chem., B 108, 19299 (2004). 10.1021/jp0470593Search in Google Scholar
[14] Fox, M. A. and Dulay, M. T., J. Photochem. Photobiol., A 98, 91 (1996). http://dx.doi.org/10.1016/1010-6030(96)04342-010.1016/1010-6030(96)04342-0Search in Google Scholar
[15] Physical Chemistry Experiment, p. 168. Beijing Chemical Industry Press 2004. (in Chinese) Search in Google Scholar
[16] Nakato, Y., Tsumura, S., and Tsuornura, H., J. Phys. Chem. 87, 2402 (1983). http://dx.doi.org/10.1021/j100236a03210.1021/j100236a032Search in Google Scholar
[17] Hwang, S. J. and Raftery, D., Catal. Today 49, 353 (1999). http://dx.doi.org/10.1016/S0920-5861(98)00449-010.1016/S0920-5861(98)00449-0Search in Google Scholar
[18] Zhang, B., Zhong, Q. L., and Zhang, L., Jiangxi Chemical Industry 2, 16 (2003). Search in Google Scholar
[19] Rabani, J., Yamashita, K., and Ushida, K., J. Phys. Chem., B 102, 1689 (1998). http://dx.doi.org/10.1021/jp973411j10.1021/jp973411jSearch in Google Scholar
[20] Micic, O. L., Zhang, Y., and Cromack, K. R., J. Phys. Chem. 97, 7277 (1993). http://dx.doi.org/10.1021/j100130a02610.1021/j100130a026Search in Google Scholar
© 2007 Institute of Chemistry, Slovak Academy of Sciences
Articles in the same Issue
- Evaluation and interlaboratory validation of a GC-MS method for analysis of pesticide residues in teas
- Protective effects of vitamin E against CCl4-induced hepatotoxicity in rabbits
- Influence of composition on corroding process of Na2O-K2O-CaO-ZrO2-SiO2 glasses
- Effects of type and number of impellers and liquid viscosity on the power characteristics of mechanically agitated gas—liquid systems
- Modelling of composting of food waste in a column reactor
- Comparison of chemical properties of food products processed by conventional and ohmic heating
- Electrical resistivity and photoluminescence of lead iodide crystals
- Effect of microwave irradiation on the reactivity of chloroarenes in Suzuki—Miyaura reaction
- Kinetics of extraction of coal-tar pitch components with supercritical carbon dioxide
- Mechanism of photocatalytic oxidation of gaseous ethanol
- Kinetics and mechanism of hydroboration of oct-1-and-4-ene by dimeric dialkylboranes
- Reaction sites of N,N′-substituted p-phenylenediamine antioxidants
- Theoretical study of solvent effect on π-EDA complexation II. Complex between TCNE and two benzene molecules
Articles in the same Issue
- Evaluation and interlaboratory validation of a GC-MS method for analysis of pesticide residues in teas
- Protective effects of vitamin E against CCl4-induced hepatotoxicity in rabbits
- Influence of composition on corroding process of Na2O-K2O-CaO-ZrO2-SiO2 glasses
- Effects of type and number of impellers and liquid viscosity on the power characteristics of mechanically agitated gas—liquid systems
- Modelling of composting of food waste in a column reactor
- Comparison of chemical properties of food products processed by conventional and ohmic heating
- Electrical resistivity and photoluminescence of lead iodide crystals
- Effect of microwave irradiation on the reactivity of chloroarenes in Suzuki—Miyaura reaction
- Kinetics of extraction of coal-tar pitch components with supercritical carbon dioxide
- Mechanism of photocatalytic oxidation of gaseous ethanol
- Kinetics and mechanism of hydroboration of oct-1-and-4-ene by dimeric dialkylboranes
- Reaction sites of N,N′-substituted p-phenylenediamine antioxidants
- Theoretical study of solvent effect on π-EDA complexation II. Complex between TCNE and two benzene molecules
