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.
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Fujihira, M., Satoh, Y., and Osa, T., Nature 293, 206 (1981).
Mattews, R. W., J. Phys. Chem. 91, 3328 (1987).
Turchi, C. S. and Ollis, D. F., J. Catal. 122, 178 (1990).
Peierson, M. W. and Nozik, A. J., J. Phys. Chem. 95, 221 (1991).
Mills, A., Morris, S., and Davies, R., J. Photochem. Photobiol., A 70, 183 (1993).
Draper, R. B. and Fox, M. A., Langmuir 6, 1396 (1990).
Jaeger, C. D. and Bard, A. J., J. Phys. Chem. 83, 3146 (1979).
Bickley, R. I. and Stone, F. S., J. Catal. 31, 389 (1973).
Bickley, R. I., Munuera, G., and Stone, F. S., J. Catal. 31, 398 (1973).
Shiraishi, F. and Kawanishi, C., J. Phys. Chem., A 108, 10491 (2004).
Shiraishi, F., Nakasako, T., and Hua, Z. Z., J. Phys. Chem., A 107, 11072 (2003).
Richard, C., J. Photochem. Photobiol., A 72, 179 (1993).
Takashi, T., Sachiko, T., and Kiyohiko, K., J. Phys. Chem., B 108, 19299 (2004).
Fox, M. A. and Dulay, M. T., J. Photochem. Photobiol., A 98, 91 (1996).
Physical Chemistry Experiment, p. 168. Beijing Chemical Industry Press 2004. (in Chinese)
Nakato, Y., Tsumura, S., and Tsuornura, H., J. Phys. Chem. 87, 2402 (1983).
Hwang, S. J. and Raftery, D., Catal. Today 49, 353 (1999).
Zhang, B., Zhong, Q. L., and Zhang, L., Jiangxi Chemical Industry 2, 16 (2003).
Rabani, J., Yamashita, K., and Ushida, K., J. Phys. Chem., B 102, 1689 (1998).
Micic, O. L., Zhang, Y., and Cromack, K. R., J. Phys. Chem. 97, 7277 (1993).
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Shao, C.L., Pan, D.X., Zhang, R.X. et al. Mechanism of photocatalytic oxidation of gaseous ethanol. Chem. Pap. 61, 51–54 (2007). https://doi.org/10.2478/s11696-006-0095-8
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DOI: https://doi.org/10.2478/s11696-006-0095-8