Comparative Study of Ni-W /CeO2, Ni-W /y-Al2O3 and Ni-W /HT Catalysts for H2 Production by Steam Reforming of Bioethanol
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https://doi.org/10.29105/qh2.1-88Palabras clave:
Catalysts, Bioethanol, HydrogenResumen
Ni-W catalysts supported on CeO2,Al2O3 and hydrotalcite (HT) were studied in the steam reforming of ethanol at 500-650ºC. The CeO2 and HT were synthesized by impregnation and direct coprecipitation methods, respectively. Commercial Al2O3 was used. Nickel content was varied from 10, 15 and 30% with 1% W. The catalyst that presented the highest catalytic activity and selectivity to hydrogen was 10% Ni-W/HT. Conversion to ethanol was 100% and selectivities to H2, CH4, CO2 and CO were 75, 5.78, 0.37 and 18.85%, respectively, at a temperature of 500 ºC. Moreover, these catalysts showed good stability with respect to carbon deposition and low selectivity towards C2H4 production. These are desirable features for catalysts to be used in hydrogen production for fuel cell applications.
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-[1] Llorca J., Piscina P.R., Sales J., Homs N. Direct production of hydrogen from ethanolic aqueous solutions over oxide catalysts, Chem. Commun., (2001) 641-642. DOI: https://doi.org/10.1039/b100334h
-[2] Cavallaro, S., Ethanol Steam Reforming on Rh/Al2O3 Catalysts. Energy Fuels(2000) 1195-1199. DOI: https://doi.org/10.1021/ef0000779
-[3] Haga, F., Nakajima, T., Miya, H., Mishima, S. Catalytic Properties of Supported Cobalt Catalysts for Steam Reforming of Ethanol. Catal. Lett. 48 ( 1997)2 23-227.
-[4] Fierro, V., Akdim, O., Mirodatos, C. On-board Hydrogen Production in a Hybrid Electric Vehicle by Bio-Ethanol Oxidative Steam Reforming over Ni and Noble Metal Based Catalysts. Green Chem. 5 (2003) 20-24. DOI: https://doi.org/10.1039/b208201m
-[5] l.P. Hernández, Y. Gochi-Ponce, J.L. Contreras Larios, A.M. Fernández. Steam reforming of ethanol over nickel-tungsten catalyst. International Journal of Hydrogen Energy 35 (2010) 12098- 12104. DOI: https://doi.org/10.1016/j.ijhydene.2009.09.069
-[6] Lyons D.M., Ryan K.M. y Morris M.A. Preparation of ordered mesoporous ceria with enhanced thermal stability. Journal of Material Chemistry. 12 (2002) 1207-1212. DOI: https://doi.org/10.1039/b104677m
-[7] Cavan F., Trifiro F., Vaccari A. Hydrotalcite-Type Anionic Cáliz: Preparation, Properties and Applications. Catalysis Today, 11 (1991)281. DOI: https://doi.org/10.1016/0920-5861(91)80068-K
-[8] Pengpanich S. Meeyoo V., Rirksomboon T. Methane partial oxidation over Ni/CeO2-ZrO2 mixed oxide solid solution catalysts. Catal.Today (2004) 93-105. DOI: https://doi.org/10.1016/j.cattod.2004.06.079
-[9] Llorca Jordi, Homs Narcís, Sales Joaquim and De la Piscina Pilar Ramírez. Efficient Production of Hydrogen over Supported Cobalt Catalysts from Ethanol Steam Reforrning. Journal of Catalysis. 209 (2002) 306-317. DOI: https://doi.org/10.1006/jcat.2002.3643
-[10] Frusteria, F., Freni, S., Chiodo, V., Donato, S., Bonura, G., Cavallaro, S., Steam and auto-thermal reforming of bioethanol over MgO and CeO2 Ni 70 supported catalysts, International Journal of Hydrogen Energy, 31 (2006) 219 2199. DOI: https://doi.org/10.1016/j.ijhydene.2006.02.024
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Derechos de autor 2011 Paz Hernández, Arturo Fernández, Sarah Messina
Esta obra está bajo una licencia internacional Creative Commons Atribución 4.0.
