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162 results on '"Teichner, S. J."'

11. Hydrocarbon Activation

Author

Parshall, G. W., Green, M. L. H., Calderazzo, F., Dowden, D. A., Gault, F. G., Halpern, J., Hamilton, G. A., Kemball, C., Teichner, S. J., Volger, H. C., Basolo, Fred, editor, and Burwell, Robert L., Jr., editor

Published
1973
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22. Photocatalytic oxidation mechanism of alkanes in contact with titanium dioxide

Author

Formenti, M, Juillet, F, and Teichner, S. J

Subjects
Inorganic And Physical Chemistry
Abstract

Isobutane was photooxidized on titanium dioxide between -16 and +180 C in tertiary butanol and acetone. The formation of tertiary butanol preceded the formation of acetone. Above 20 C the latter compound became clearly predominant. The reaction kinetics obeyed a steady state model of oxygen chemisorption with the involvement of isobutane in the physisorbed phase.

Published
1977

23. Variation in the thermionic work function of semiconductor powders exposed to electromagnetic radiation

Author

Bourasseau, S, Martin, J. R, Juillet, F, and Teichner, S. J

Subjects
Inorganic And Physical Chemistry
Abstract

The study of the variation of thermoelectronic work function potential of TiO2 in the presence of isobutane shows that this gas is not adsorbed on this solid, in either the presence or the absence of ultraviolet radiation. These results, as well as those obtained in a previous work, lead to the mechanism of the photo-oxidation of isobutane at room temperature, in which excited atomic oxygen is the active species.

Published
1977

24. Change in the thermionic work function of semiconductor powders exposed to electromagnetic radiation

Author

Bourasseau, S, Martin, J. R, Juillet, F, and Teichner, S. J

Subjects
Inorganic And Physical Chemistry
Abstract

The variations of the thermoelectronic work function of titanium dioxide, submitted to an ultraviolet or visible and infrared radiation, in the presence of oxygen, are studied by the vibrating condenser method. It is shown that during the ultraviolet irradiation, a desorption of a first species of oxygen simultaneously occurs with the adsorption of a second species of oxygen and that this phenomenon is found for any structure of TiO2 (anatase or rutile) any texture, oxygen pressure, radiation intensity, and nature of introduced dopes.

Published
1977

25. Photocatalytic oxidation mechanism of isobutane in contact with titanium dioxide (TiO2)

Author

Formenti, M, Juillet, F, and Teichner, S. J

Subjects
Inorganic And Physical Chemistry
Abstract

The photocatalytic oxidation of isobutane to acetone in the presence of irradiated ultraviolet irradiated titanium dioxide was found to occur in several steps. Insertion of an oxygen atom onto the tertiary carbon transforming the isobutane into tertiary butanol occurred first. This step implied the photonic formation of the 02- species and its reaction with positive holes. The tertiary butanol was then dehydrated to isobutene which is oxidized acetone and carbon dioxide. Insertion of an oxygen atom onto the primary carbon led to isobutanal after oxidation to the alcohol. An analogous reaction scheme was proposed for all alkanes.

Published
1977

33. General discussion.

Author

Boehm, H. P., Teichner, S. J., Stone, F. S., Bickley, R. I., Thomas, J. M., Marklund, I., and Claudel, B.

Published
1974
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35. General discussion.

Author

Buckle, E. R., Teichner, S. J., Waldie, B., Stauffer, D., Place, E. R., Dunning, W. J., Kerker, M., Graham, S. C., and Kiang, C. S.

Published
1973
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38. General discussion.

Author

Tench, A. J., Parkyns, N. D., Schiavello, M., Pott, G. T., Ratnasamy, P., Fripiat, J. J., Bickley, R. I., Pearce, D. R., Steinberg, Menachem, Boehm, H. P., Meriaudeau, P., Thompson, P., Teichner, S. J., Wilson, R., Malati, M. A., Rophael, M. W., Ogden, D., Juillet, F., Cossee, P., and Cimino, A.

Published
1971
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41. General discussion.

Author

Hansford, R. C., Szabo, Z. G., Barry, T. I., Stone, F. S., Kemball, C., Rabo, J. A., Nelson, R. L., Wilkinson, R. W., Klier, K., Kuchynka, K., Thomas, J. M., Gay, I. D., Tompkins, F. C., Dewing, J., Cimino, A., Roginskii, S. Z., Vőlter, J., Prater, C. D., Chon, H., and Teichner, S. J.

Published
1966
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42. General discussion.

Author

Schneider, E. E., Pearson, W. B., Lidiard, A. B., Burgess, R. E., Wolff, G. A., Heiland, G., Symons, M. C. R., Kemball, C., Stone, F. S., Winter, E. R. S., Teichner, S. J., Elton, G. A. H., Green, Mino, Butler, J. D., Brennan, D., Martius, Ursula, Vermilyea, D. A., Rapson, H. D. C., Ashwin, J., and Lawson, D. F.

Published
1959
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