Ni(II)-Al(III) layered double hydroxide as catalyst precursor for ethanol steam reforming: Activation treatments and kinetic studies

The kinetic behaviour of the steam reforming reaction using Ni(II)-Al(III) layered double hydroxide (LDH) as catalyst precursor is studied. The carbonate form of Ni(II)-Al(III) LDH (takovite) was prepared using an homogeneous alkalinization procedure, by means of the thermal hydrolysis of urea. Diff...

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Autores principales: Jobbagy, Matias, Amadeo, Norma Elvira
Publicado: 2008
Materias:
LDH
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09205861_v133-135_n1-4_p319_Mas
http://hdl.handle.net/20.500.12110/paper_09205861_v133-135_n1-4_p319_Mas
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spelling paper:paper_09205861_v133-135_n1-4_p319_Mas2023-06-08T15:50:12Z Ni(II)-Al(III) layered double hydroxide as catalyst precursor for ethanol steam reforming: Activation treatments and kinetic studies Jobbagy, Matias Amadeo, Norma Elvira Ethanol steam reforming Kinetic study LDH Ni Catalyst Activation analysis Catalyst activity Ethanol Hydrolysis Oxides Urea Ethanol steam reforming Kinetic behavior Nickel compounds The kinetic behaviour of the steam reforming reaction using Ni(II)-Al(III) layered double hydroxide (LDH) as catalyst precursor is studied. The carbonate form of Ni(II)-Al(III) LDH (takovite) was prepared using an homogeneous alkalinization procedure, by means of the thermal hydrolysis of urea. Different activation treatments of Ni(II)Al(III) precursor are analysed; it was found that the catalyst which presents the higher activity in methane steam reforming, is that obtained by pure H2 reduction of precursor without previous calcination. The H2 yield for ethanol steam reforming using the reduced LDH sample reaches values of 5 mol of H2 per mol of ethanol in the feed. The others products obtained, operating between 823 and 923 K, are CO, CO2 and CH4. It is found that the reaction order respect to ethanol is lower than 1. It is verified that, for each reaction temperature, there is a water/ethanol molar ratio at which ethanol conversion has a maximum. It means that a competition between both reactants adsorbed on the same active sites is verified. © 2007 Elsevier B.V. All rights reserved. Fil:Jobbágy, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Amadeo, N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09205861_v133-135_n1-4_p319_Mas http://hdl.handle.net/20.500.12110/paper_09205861_v133-135_n1-4_p319_Mas
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Ethanol steam reforming
Kinetic study
LDH
Ni Catalyst
Activation analysis
Catalyst activity
Ethanol
Hydrolysis
Oxides
Urea
Ethanol steam reforming
Kinetic behavior
Nickel compounds
spellingShingle Ethanol steam reforming
Kinetic study
LDH
Ni Catalyst
Activation analysis
Catalyst activity
Ethanol
Hydrolysis
Oxides
Urea
Ethanol steam reforming
Kinetic behavior
Nickel compounds
Jobbagy, Matias
Amadeo, Norma Elvira
Ni(II)-Al(III) layered double hydroxide as catalyst precursor for ethanol steam reforming: Activation treatments and kinetic studies
topic_facet Ethanol steam reforming
Kinetic study
LDH
Ni Catalyst
Activation analysis
Catalyst activity
Ethanol
Hydrolysis
Oxides
Urea
Ethanol steam reforming
Kinetic behavior
Nickel compounds
description The kinetic behaviour of the steam reforming reaction using Ni(II)-Al(III) layered double hydroxide (LDH) as catalyst precursor is studied. The carbonate form of Ni(II)-Al(III) LDH (takovite) was prepared using an homogeneous alkalinization procedure, by means of the thermal hydrolysis of urea. Different activation treatments of Ni(II)Al(III) precursor are analysed; it was found that the catalyst which presents the higher activity in methane steam reforming, is that obtained by pure H2 reduction of precursor without previous calcination. The H2 yield for ethanol steam reforming using the reduced LDH sample reaches values of 5 mol of H2 per mol of ethanol in the feed. The others products obtained, operating between 823 and 923 K, are CO, CO2 and CH4. It is found that the reaction order respect to ethanol is lower than 1. It is verified that, for each reaction temperature, there is a water/ethanol molar ratio at which ethanol conversion has a maximum. It means that a competition between both reactants adsorbed on the same active sites is verified. © 2007 Elsevier B.V. All rights reserved.
author Jobbagy, Matias
Amadeo, Norma Elvira
author_facet Jobbagy, Matias
Amadeo, Norma Elvira
author_sort Jobbagy, Matias
title Ni(II)-Al(III) layered double hydroxide as catalyst precursor for ethanol steam reforming: Activation treatments and kinetic studies
title_short Ni(II)-Al(III) layered double hydroxide as catalyst precursor for ethanol steam reforming: Activation treatments and kinetic studies
title_full Ni(II)-Al(III) layered double hydroxide as catalyst precursor for ethanol steam reforming: Activation treatments and kinetic studies
title_fullStr Ni(II)-Al(III) layered double hydroxide as catalyst precursor for ethanol steam reforming: Activation treatments and kinetic studies
title_full_unstemmed Ni(II)-Al(III) layered double hydroxide as catalyst precursor for ethanol steam reforming: Activation treatments and kinetic studies
title_sort ni(ii)-al(iii) layered double hydroxide as catalyst precursor for ethanol steam reforming: activation treatments and kinetic studies
publishDate 2008
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09205861_v133-135_n1-4_p319_Mas
http://hdl.handle.net/20.500.12110/paper_09205861_v133-135_n1-4_p319_Mas
work_keys_str_mv AT jobbagymatias niiialiiilayereddoublehydroxideascatalystprecursorforethanolsteamreformingactivationtreatmentsandkineticstudies
AT amadeonormaelvira niiialiiilayereddoublehydroxideascatalystprecursorforethanolsteamreformingactivationtreatmentsandkineticstudies
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