Artículo
Abstract:
Manganese/cerium composite oxide (MnO2/CeO2) proved to be a potent solid catalyst for the catalytic wet oxidation (CWO) of aqueous phenol under mild treatment conditions (80-130°C, 0.5 MPa O2 pressure). Despite the fact this catalyst exhibited an important activity in eliminating completely phenol and total organic carbon (TOC), its poor selectivity to CO2 was demonstrated as a result of deposition on the catalyst surface of carbonaceous deposits with high carbon content. Promotion of MnO2/CeO2 with platinum improved the CO2 yield of phenol oxidation. Evidence for the reduction of the carbonaceous deposit over Pt-MnO2/CeO2 was confirmed via elemental analysis and temperature-programmed oxidation (TPO). Surface analysis by X-ray photoelectron spectroscopy (XPS) indicated that the deposits built up more on cerium than on manganese and that platinum increased the aromaticity of the deposit. Manganese/cerium composite oxide (MnO2/CeO2) proved to be a potent solid catalyst for the catalytic wet oxidation (CWO) of aqueous phenol under mild treatment conditions (80-130 °C, 0.5 MPa O2 pressure). Despite the fact this catalyst exhibited an important activity in eliminating completely phenol and total organic carbon (TOC), its poor selectivity to CO2 was demonstrated as a result of deposition on the catalyst surface of carbonaceous deposits with high carbon content. Promotion of MnO2/CeO2 with platinum improved the CO2 yield of phenol oxidation. Evidence for the reduction of the carbonaceous deposit over Pt-MnO2/CeO2 was confirmed via elemental analysis and temperature-programmed oxidation (TPO). Surface analysis by X-ray photoelectron spectroscopy (XPS) indicated that the deposits built up more on cerium than on manganese and that platinum increased the aromaticity of the deposit.
Registro:
| Documento: | Artículo |
| Título: | Wet oxidation of phenol catalyzed by unpromoted and platinum-promoted manganese/cerium oxide |
| Autor: | Hamoudi, S.; Larachi, F.; Cerrella, G.; Cassanello, M. |
| Ciudad: | Washington |
| Filiación: | Department of Chemical Engineering, CERPIC, Laval University, Qué. G1K 7P4, Canada PINMATE, Department Industrias FCEyN, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina |
| Palabras clave: | Catalysis; Catalyst activity; Catalyst selectivity; Cerium compounds; Deposition; Manganese compounds; Phenols; Platinum; Reduction; Surface properties; X ray photoelectron spectroscopy; Aromaticity; Catalytic wet oxidation; Temperature programmed oxidation (TPO); Oxidation; Oxidation; pollutant removal |
| Año: | 1998 |
| Volumen: | 37 |
| Número: | 9 |
| Página de inicio: | 3561 |
| Página de fin: | 3566 |
| DOI: | http://dx.doi.org/10.1021/ie980081w |
| Título revista: | Industrial and Engineering Chemistry Research |
| Título revista abreviado: | Ind. Eng. Chem. Res. |
| ISSN: | 08885885 |
| CODEN: | IECRE |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08885885_v37_n9_p3561_Hamoudi |
Referencias:
- Levee, J., Wet Oxidation Processes for Treating Industrial Wastewaters (1997) Chem. Biochem. Eng. Q., 11, p. 47
- Sadana, A., Katzer, J.R., Involvement of Free Radicals in the Aqueous-Phase Catalytic Oxidation of Phenol over Copper Oxide (1974) J. Catal., 35, p. 140
- Ohta, H., Goto, S., Teshima, H., Liquid-Phase Oxidation of Phenol in a Rotating Catalytic Basket Reactor (1980) Ind. Eng. Chem. Fundam., 19, p. 180
- Pintar, A., Levee, J., Catalytic Oxidation of Organics in Aqueous Solutions. I. Kinetics of Phenol Oxidation (1992) J. Catal., 135, p. 345
- Matatov-Meytal, Y.L., Sheintuch, M., Catalytic Abatement of Water Pollutants (1998) Ind. Eng. Chem. Res., 37, p. 309
- Imamura, S., Nakamura, M., Kawabata, N., Yoshida, J., Ishida, S., Wet Oxidation of PolyCethylene Glycol Catalyzed by Manganese-Cerium Composite Oxide (1986) Ind. Eng. Chem. Prod. Res. Dev., 25, p. 34
- Imamura, S., Fukuda, I., Ishida, S., Wet Oxidation Catalyzed by Ruthenium Supported on Cerium(IV) Oxides (1988) Ind. Eng. Chem. Res., 27, p. 718
- Imamura, S., Dol, A., Ishida, S., Wet Oxidation of Ammonia Catalyzed by Cerium-Based Composite Oxides (1985) Ind. Eng. Chem. Prod. Res. Dev., 24, p. 75
- Duprez, D., Delanoe, F., Barbier, Jr., Isnard, P., Blanchard, G., Catalytic Oxidation of Organic Compounds in Aqueous Media (1996) Catal. Today., 29, p. 317
- Hamoudi, S., Larachi, F., Sayari, A., Wet Oxidation of Phenolic Solutions over Heterogeneous Catalysts: Degradation Profile and Catalyst Behavior (1998) J. Catal.
- Fripiat, J.J., Gatineau, L., Van Damme, H., Multilayer Physical Adsorption on Fractal Surfaces (1986) Langmuir, 2, p. 562
- Pfeifer, P., Obert, M., Cole, M.W., Fractal BET and FHH Theories of Adsorption: A Comparative Study (1989) Proc. R. Soc. London a, 423, p. 169
- Ding, Z.Y., Frisch, M.A., Li, L., Gloyna, E.F., Catalytic Oxidation in Supercritical Water (1996) Ind. Eng. Chem. Res., 35, p. 3257
- Kelemen, S.R., Rose, K.D., Kwiatek, P., J. Carbon Aromaticity Based on XPS ∏ to ∏* Signal Intensity (1993) Appl. Surf. Sei, 64, p. 167
- Desimoni, E., Casella, G.I., Morone, A., Salvi, A.M., XPS Determination of Oxygen-Containing Functional Groups on CarbonFibre Surfaces and the Cleaning of these Surfaces (1990) Surf. Interface. Anal., 15, p. 627
- Paâl, Z., Schlögl, R., Ertl, G., The Surface State and Catalytic Properties of Pt Black after O2-H2 Cycles (1992) Catal. Lett., 12, p. 331
- Levis, R.J., Delouise, L.A., White, E.J., Winograd, N., Defect Induced Surface Chemistry: A Comparison of the Adsorption and Thermal Decomposition of C2H4 on Rh {111} and Rh {331} (1990) Surf. Sei., 230, p. 35
Citas:
---------- APA ----------
Hamoudi, S., Larachi, F., Cerrella, G. & Cassanello, M. (1998) . Wet oxidation of phenol catalyzed by unpromoted and platinum-promoted manganese/cerium oxide. Industrial and Engineering Chemistry Research, 37(9), 3561-3566.http://dx.doi.org/10.1021/ie980081w
---------- CHICAGO ----------
Hamoudi, S., Larachi, F., Cerrella, G., Cassanello, M. "Wet oxidation of phenol catalyzed by unpromoted and platinum-promoted manganese/cerium oxide" . Industrial and Engineering Chemistry Research 37, no. 9 (1998) : 3561-3566.http://dx.doi.org/10.1021/ie980081w
---------- MLA ----------
Hamoudi, S., Larachi, F., Cerrella, G., Cassanello, M. "Wet oxidation of phenol catalyzed by unpromoted and platinum-promoted manganese/cerium oxide" . Industrial and Engineering Chemistry Research, vol. 37, no. 9, 1998, pp. 3561-3566.http://dx.doi.org/10.1021/ie980081w
---------- VANCOUVER ----------
Hamoudi, S., Larachi, F., Cerrella, G., Cassanello, M. Wet oxidation of phenol catalyzed by unpromoted and platinum-promoted manganese/cerium oxide. Ind. Eng. Chem. Res. 1998;37(9):3561-3566.http://dx.doi.org/10.1021/ie980081w
