Trickle bed reactors: Effect of liquid flow modulation on catalytic activity

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The effect of slow ON-OFF liquid flow modulation on the oxidation of aqueous solutions of ethanol using a 0.5% Pd / Al2 O3 commercial egg-shell catalyst was investigated in a laboratory trickle bed reactor (TBR). In this mode of operation, the catalyst was cyclically exposed to oxidative and reducti...

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Autor principal: Ayude, A.
Otros Autores: Cechini, J., Cassanello, M., Martínez, O., Haure, P.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2008
Acceso en línea:Registro en Scopus
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Biblioteca Central Dr. Luis F. Leloir (FCEN) de Universidad de Buenos Aires
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024 7 |2 scopus  |a 2-s2.0-52949104405 
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030 |a CESCA 
100 1 |a Ayude, A. 
245 1 0 |a Trickle bed reactors: Effect of liquid flow modulation on catalytic activity 
260 |c 2008 
270 1 0 |m Haure, P.; INTEMA, CONICET, UNMdP. J.B. Justo 4302, 7600 Mar del Plata, Argentina; email: phaure@fi.mdp.edu.ar 
506 |2 openaire  |e Política editorial 
504 |a Ayude, M.A., Cassanello, M.C., Martínez, O.M., Haure, P.M., Phenomenological approach to interpret the effect of liquid flow modulation in trickle-bed reactors at the particle scale (2005) Chemical Engineering Science, 60 (22), pp. 6262-6269 
504 |a Castellari, A.T., Haure, P.M., Experimental study of the periodic operation of a trickle-bed reactor (1995) AlChE Journal, 41, pp. 1593-1597 
504 |a Gangwal, V.R., Van Wachem, B.G., Kuster, B.F., Schouten, J.C., Platinum catalysed aqueous alcohol oxidation: model-based investigation of reaction conditions and catalyst design (2002) Chemical Engineering Science, 57, pp. 5051-5063 
504 |a Gangwal, V.R., Van der Schaaf, J., Kuster, B.F., Schouten, J.C., Noble-metal-catalyzed aqueous alcohol oxidation: reaction start-up and catalyst deactivation and reactivation (2005) Journal of Catalysis, 232, pp. 432-443 
504 |a Herzkowitz, M., Wetting efficiency in trickle-bed reactors: its effect on the reactor performance (1981) Chemical Engineering Journal, 22, pp. 167-175 
504 |a Horányi, G., Heterogeneous catalysis and electrocatalysis (1994) Catalysis Today, 19, pp. 285-312 
504 |a Keresszegi, C., Burgi, T., Mallat, T., Baiker, A., On the role of Oxygen in the liquid phase aerobic oxidation of alcohols on Palladium (2002) Journal of Catalysis, 211, pp. 244-251 
504 |a Keresszegi, C., Ferri, D., Mallat, T., Baiker, A., Unraveling the surface reactions during liquid-phase oxidation of benzyl alcohol on Pd / Al2 O3: an in situ ATR-IR study (2005) Journal of Physical Chemistry B, 109, pp. 958-967 
504 |a Kluytmans, J.H., Markusse, A.P., Kuster, B.F., Marin, G.B., Schouten, J.C., Engineering aspects of the aqueous noble metal catalysed alcohol oxidation (2000) Catalysis Today, 57, pp. 143-155 
504 |a Mallat, T., Baiker, A., Oxidation of alcohols with molecular oxygen on platinum metal catalysts in aqueous solutions (1994) Catalysis Today, 19, pp. 247-284 
504 |a Mallat, T., Baiker, A., Oxidation of alcohols with molecular oxygen on solid catalysts (2004) Chemical Reviews, 104, pp. 3037-3058 
504 |a Markusse, A.P., Kuster, B.F., Schouten, J.C., Platinum catalysed aqueous methyl α-D-glucopyranoside oxidation in a multiphase redox-cycle reactor (2001) Catalysis Today, 66, pp. 191-197 
504 |a Massa, P.A., Ayude, M.A., Ivorra, F., Fenoglio, R., Haure, P., Phenol oxidation in a periodically operated trickle bed reactor (2005) Catalysis Today, 107-108, pp. 630-636 
504 |a Muzen, A., Fraguío, M.S., Cassanello, M., Ayude, M.A., Haure, P., Martínez, O., Clean oxidation of alcohols in trickle-bed reactors with liquid flow modulation (2005) Industrial & Engineering Chemistry Research, 44, pp. 5275-5284 
504 |a Pintar, A., Bercic, G., Levec, J., Catalytic liquid-phase oxidation of aqueous phenol solutions in a trickle-bed reactor (1997) Chemical Engineering Science, 52, p. 4143 
504 |a Silveston, P.L., Hanika, J., Challenges for the periodic operation of trickle-bed catalytic reactors (2002) Chemical Engineering Science, 57, pp. 3373-3385 
520 3 |a The effect of slow ON-OFF liquid flow modulation on the oxidation of aqueous solutions of ethanol using a 0.5% Pd / Al2 O3 commercial egg-shell catalyst was investigated in a laboratory trickle bed reactor (TBR). In this mode of operation, the catalyst was cyclically exposed to oxidative and reductive environments. The study was carried out under different gas and liquid flow rates, cycle periods and splits. Cycling results have been compared with the steady-state experiments performed at the corresponding average liquid flow rate. Significant improvements over the continuous operation were obtained when the catalyst was exposed to a short surplus of oxygen (to minimize deactivation by overoxidation in the kinetic regime) after a longer time of working in the mass transfer limited regime. According to the results presented here, it is recommended to work with high liquid flow rates and moderate gas flow rates to ensure complete wetting of the catalyst during the ON cycle and to minimize the overoxidation process during the OFF cycle. © 2008 Elsevier Ltd. All rights reserved.  |l eng 
536 |a Detalles de la financiación: Umweltbundesamt 
536 |a Detalles de la financiación: Universidad Nacional de La Plata, UNLP 
536 |a Detalles de la financiación: Agencia Nacional de Promoción Científica y Tecnológica 
536 |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas 
536 |a Detalles de la financiación: Financial support from CONICET, UBA, UNMdP, UNLP and ANPCyT are gratefully acknowledged. We express our gratitude to Prof. Frank Stüber for his valuable comments. We would also like to thank Mr. Hector Asencio and Ms. Carmen Rodriguez for the technical support. 
593 |a INTEMA, CONICET, UNMdP. J.B. Justo 4302, 7600 Mar del Plata, Argentina 
593 |a PINMATE, Dep. Industrias, FCEyN, Int. Güiraldes 2620, C1428BGA Buenos Aires, Argentina 
593 |a Dep. Ing. Química, FI-UNLP-CINDECA, Calle 47 No. 257, 1900 La Plata, Argentina 
690 1 0 |a ALCOHOL OXIDATION 
690 1 0 |a CATALYST ACTIVATION 
690 1 0 |a CATALYST DEACTIVATION 
690 1 0 |a LIQUID FLOW MODULATION 
690 1 0 |a MULTIPHASE REACTORS 
690 1 0 |a STABILITY 
690 1 0 |a CHEMICAL REACTORS 
690 1 0 |a ETHANOL 
690 1 0 |a PALLADIUM 
690 1 0 |a SOLUTIONS 
690 1 0 |a ALCOHOL OXIDATION 
690 1 0 |a AQUEOUS SOLUTIONS 
690 1 0 |a CATALYST ACTIVATION 
690 1 0 |a CATALYST DEACTIVATION 
690 1 0 |a CATALYTIC ACTIVITIES 
690 1 0 |a LIQUID FLOW MODULATION 
690 1 0 |a MULTIPHASE REACTORS 
690 1 0 |a STABILITY 
690 1 0 |a TRICKLE-BED REACTORS 
690 1 0 |a MODULATION 
700 1 |a Cechini, J. 
700 1 |a Cassanello, M. 
700 1 |a Martínez, O. 
700 1 |a Haure, P. 
773 0 |d 2008  |g v. 63  |h pp. 4969-4973  |k n. 20  |p Chem. Eng. Sci.  |x 00092509  |w (AR-BaUEN)CENRE-291  |t Chemical Engineering Science 
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856 4 0 |u https://doi.org/10.1016/j.ces.2008.07.024  |y DOI 
856 4 0 |u https://hdl.handle.net/20.500.12110/paper_00092509_v63_n20_p4969_Ayude  |y Handle 
856 4 0 |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00092509_v63_n20_p4969_Ayude  |y Registro en la Biblioteca Digital 
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