Abstract:
In this work a kinetic study of the vapor phase oxidation of toluene by air using titanium doped vanadium antimonate as catalytic system, is reported. The catalytic tests were performed in an integral fixed-bed reactor operating at atmospheric pressure. From the results obtained in the introductory kinetic tests, a kinetic scheme that considers the partial oxidation of toluene to benzaldehyde, a consecutive oxidation of benzaldehyde to carbon oxides and a parallel oxidation of toluene to carbon oxides, is proposed. The corresponding kinetic parameters are estimated using non-linear regression. There is a good fitting between the regression curves and the experimental data. The oxidation of toluene takes place on a partially reduced catalyst surface. The overall rate depends on the partial pressures of the reactants. The three steps of the kinetic mechanism have similar activation energies indicating that the same intermediate is involved. In the range of the operating conditions, there is no rate-controlling step. © 2000 Elsevier Science B. V. All rights reserved.
Registro:
Documento: |
Artículo
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Título: | Oxidation of toluene to benzaldehyde over VSb1-xTixO4 catalyst. Kinetics studies |
Autor: | Barbaro, A.; Larrondo, S.; Amadeo, N. |
Filiación: | Laboratorio de Procesos Catalíticos, Depto. de Ing. Química, Ciudad Universitaria, 1428 Buenos Aires, Argentina
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Palabras clave: | antimony; benzaldehyde; carbon; oxide; titanium; toluene; unclassified drug; vanadium; vanadium antimonate; air; atmospheric pressure; catalyst; chemical reaction kinetics; conference paper; fixed bed reactor; metal binding; nonlinear system; oxidation; oxidation kinetics; partial oxidation; phase transition; pressure measurement; process monitoring; reaction analysis; reactor operation; regression analysis; surface property; vapor |
Año: | 2000
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Volumen: | 130 B
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Página de inicio: | 1733
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Página de fin: | 1738
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Título revista: | Studies in Surface Science and Catalysis
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Título revista abreviado: | Stud. Surf. Sci. Catal.
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ISSN: | 01672991
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CODEN: | SSCTD
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CAS: | antimony, 14374-79-9, 7440-36-0; benzaldehyde, 100-52-7; carbon, 7440-44-0; oxide, 16833-27-5; titanium, 7440-32-6; toluene, 108-88-3; vanadium, 7440-62-2
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01672991_v130B_n_p1733_Barbaro |
Referencias:
- Bielanski, A., Haber, J., (1991) Oxygen in Catalysis, , Marcel Dekker Inc. , New York
- Van Der Wiele, K., Van Den Berg, P.J., (1975) J. of Catalysis, 39, p. 437
- Mars, P., Van Krevelen, D.W., (1954) Special Supplement to Chem. Eng. Sci., 3, p. 41
- Gunduz, G., Akpolat, O., (1990) Ind. En. Chem. Res., 29, p. 45
- Trimm, D.L., Irshad, M., (1970) J. of Catalysis, 18, p. 142
- Papadatos, K., Shelstad, K., (1973) J. of Catalysis, 28, p. 116
- Ponzi, M., Duschatzky, C., Carrascull, A., Ponzi, E., (1998) Applied Catal. A: Gen., 169, p. 373
- Andersson, S.L.T., (1986) J. of Catalysis, 98, p. 138
- Barbara, A., Larrondo, S., Duhalde, S., Amadeo, N., Applied Catal. A: Gen., , (in press)
- Berry, F., Smart, L., Duhalde, S., (1996) Polyhedron, 15, p. 651
- Oyama, S.T., Desikan, A.N., Hightower, J.W., (1992) ACS Symposium Series, 523
- Quiroga, O.D., Gottifredi, J.C., (1982) Avances En La Determinación De Parámetros Cinéticos En Sistemas De Reacciones Químicas Complejas, CONICET, , Buenos Aires
Citas:
---------- APA ----------
Barbaro, A., Larrondo, S. & Amadeo, N.
(2000)
. Oxidation of toluene to benzaldehyde over VSb1-xTixO4 catalyst. Kinetics studies. Studies in Surface Science and Catalysis, 130 B, 1733-1738.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01672991_v130B_n_p1733_Barbaro [ ]
---------- CHICAGO ----------
Barbaro, A., Larrondo, S., Amadeo, N.
"Oxidation of toluene to benzaldehyde over VSb1-xTixO4 catalyst. Kinetics studies"
. Studies in Surface Science and Catalysis 130 B
(2000) : 1733-1738.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01672991_v130B_n_p1733_Barbaro [ ]
---------- MLA ----------
Barbaro, A., Larrondo, S., Amadeo, N.
"Oxidation of toluene to benzaldehyde over VSb1-xTixO4 catalyst. Kinetics studies"
. Studies in Surface Science and Catalysis, vol. 130 B, 2000, pp. 1733-1738.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01672991_v130B_n_p1733_Barbaro [ ]
---------- VANCOUVER ----------
Barbaro, A., Larrondo, S., Amadeo, N. Oxidation of toluene to benzaldehyde over VSb1-xTixO4 catalyst. Kinetics studies. Stud. Surf. Sci. Catal. 2000;130 B:1733-1738.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01672991_v130B_n_p1733_Barbaro [ ]