Artículo
Abstract:
The effect of slow ON-OFF liquid flow modulation on the yield of consecutive reactions is investigated for oxidation of aqueous ethanol solutions using a 0.5% Pd/Al 2O 3 commercial catalyst in a laboratory trickle-bed reactor. Experiments with modulated liquid flow rate (MLFR) were performed under the same hydrodynamic conditions (degree of wetting, liquid holdup) as experiments with constant liquid flow rate (CLFR). Thus, the impact of the duration of wet and dry cycles as well as the period can be independently investigated. Depending on cycling conditions, acetaldehyde or acetic acid production is favored with MLFR compared to CLFR. Results suggest both the opportunity and challenge of finding a way to tune the cycling parameters for producing the most appropriate product. ON-OFF liquid flow modulation in a trickle-bed reactor and its impact on the yield of ethanol oxidation in presence of a Pd/Al 2O 3 catalyst is studied. High cycling frequencies benefit the yield toward the intermediate product, while intermediate frequencies significantly increase the final product yield. As demonstrated, product distribution can be considerably modified through frequency tuning. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Registro:
| Documento: | Artículo |
| Título: | Yield Optimization in a Cycled Trickle-Bed Reactor: Ethanol Catalytic Oxidation as a Case Study |
| Autor: | Ayude, A.; Cassanello, M.; Martínez, O.; Haure, P. |
| Filiación: | INTEMA, CONICET, Mar del Plata, Argentina Universidad de Buenos Aires, PINMATE, Departamento de Industrias, FCEyN, Buenos Aires, Argentina Departamento de Ingeniería Química, FI-UNLP-CINDECA, La Plata, Argentina |
| Palabras clave: | Catalytic oxidation; Liquid flow modulation; Trickle-bed reactor; Acetic acid productions; Aqueous ethanol solutions; Commercial catalyst; Consecutive reaction; Cycling conditions; Cycling frequencies; Ethanol oxidation; Frequency-tuning; Hydrodynamic conditions; Intermediate frequencies; Intermediate product; Liquid flow modulation; Liquid flow rates; Liquid hold ups; Product distributions; Product yields; Trickle bed reactor; Wet and dry cycles; Yield optimization; Acetic acid; Aldehydes; Catalysts; Catalytic oxidation; Chemical reactors; Ethanol; Experiments; Flow rate; Modulation; Liquids |
| Año: | 2012 |
| Volumen: | 35 |
| Número: | 5 |
| Página de inicio: | 899 |
| Página de fin: | 903 |
| DOI: | http://dx.doi.org/10.1002/ceat.201100422 |
| Título revista: | Chemical Engineering and Technology |
| Título revista abreviado: | Chem. Eng. Technol. |
| ISSN: | 09307516 |
| CODEN: | CETEE |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09307516_v35_n5_p899_Ayude |
Referencias:
- Dudukovic, M., Larachi, F., Mills, P., (2002) Catal. Rev., 44, p. 123
- Silveston, P., Hanika, J., (2002) Chem. Eng. Sci., 57, p. 3373
- Boelhouwer, J., Piepers, H., Drinkenburg, A., (2002) Chem. Eng. Sci., 57, p. 3387
- Fraguío, S., Muzen, A., Martinez, O., Bonelli, P., Cassanello, M., (2004) Lat. Am. Appl. Res., 34, p. 11
- Massa, P., Ayude, M., Ivorra, F., Fenoglio, R., Haure, P., (2002) Catal. Today, 107-108, p. 630
- Liu, G., Duan, Y., Wang, Y., Wang, L., Mi, Z., (2005) Chem. Eng. Sci., 60, p. 6270
- Liu, G., Zhang, X., Li Wang, L., Zhang, S., Mi, Z., (2008) Chem. Eng. Sci., 63, p. 4991
- Skála, D., Hanika, J., (2008) Chem. Pap., 62, p. 215
- Castellari, A., Haure, M., (1995) AIChE J., 41, p. 1593
- Gabarain, L., Castellari, A., Cechini, J., Tobolski, A., Haure, P., (1997) AIChE J., 43, p. 166
- Tukac, V., Simickova, M., Chyba, V., Lederer, J., Kolena, J., Hanika, J., Jiricny, V., Stavarekc, P., (2007) Chem. Eng. Sci., 62, p. 4891
- Ayude, M., Cechini, J., Cassanello, M., Martínez, O., Haure, P., (2008) Chem. Eng. Sci., 63, p. 4969
- Schubert, M., Kryk, H., Hampel, U., (2010) Chem. Eng. Process., 49, p. 1107
- Liu, G., Lan, J., Cao, Y., Huang, Z., Cheng, Z., Mi, Z., (2009) Chem. Eng. Sci., 64, p. 3329
- Ayude, M., Martínez, O., Cassanello, M., (2007) Chem. Eng. Sci., 62, p. 6002
- Keresszegi, C., Bürgi, T., Mallat, T., Baiker, A., (2002) J. Catal., 211, p. 244
- Keresszegi, C., Ferri, D., Mallat, T., Baiker, A., (2005) J. Catal., 234, p. 64
Citas:
---------- APA ----------
Ayude, A., Cassanello, M., Martínez, O. & Haure, P. (2012) . Yield Optimization in a Cycled Trickle-Bed Reactor: Ethanol Catalytic Oxidation as a Case Study. Chemical Engineering and Technology, 35(5), 899-903.http://dx.doi.org/10.1002/ceat.201100422
---------- CHICAGO ----------
Ayude, A., Cassanello, M., Martínez, O., Haure, P. "Yield Optimization in a Cycled Trickle-Bed Reactor: Ethanol Catalytic Oxidation as a Case Study" . Chemical Engineering and Technology 35, no. 5 (2012) : 899-903.http://dx.doi.org/10.1002/ceat.201100422
---------- MLA ----------
Ayude, A., Cassanello, M., Martínez, O., Haure, P. "Yield Optimization in a Cycled Trickle-Bed Reactor: Ethanol Catalytic Oxidation as a Case Study" . Chemical Engineering and Technology, vol. 35, no. 5, 2012, pp. 899-903.http://dx.doi.org/10.1002/ceat.201100422
---------- VANCOUVER ----------
Ayude, A., Cassanello, M., Martínez, O., Haure, P. Yield Optimization in a Cycled Trickle-Bed Reactor: Ethanol Catalytic Oxidation as a Case Study. Chem. Eng. Technol. 2012;35(5):899-903.http://dx.doi.org/10.1002/ceat.201100422
