Ethanol steam reforming on Ni/Al2O3 catalysts: Effect of Mg addition
Ethanol steam reforming is an interesting alternative for hydrogen production since ethanol can be renewably obtained. Use of lamellar double hydroxides (LDHs) as precursors of nickel catalysts leads to highly dispersed metal particles in an aluminium structure. In this sense, a Ni(II)Al(III) cataly...
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todo:paper_03603199_v33_n13_p3489_Vizcaino2023-10-03T15:26:23Z Ethanol steam reforming on Ni/Al2O3 catalysts: Effect of Mg addition Vizcaíno, A.J. Arena, P. Baronetti, G. Carrero, A. Calles, J.A. Laborde, M.A. Amadeo, N. Carbon deposits Ethanol Hydrogen Steam reforming Addition reactions Aluminum Aluminum cladding Catalysis Catalyst activity Catalysts Ethylene Gas fuel manufacture Hydrogen Hydrogen production Magnesium printing plates Nickel Nickel alloys Steam Steam engineering acid sites Active sites Al(III) Aluminium structures Carbon deposition Catalytic activities Coke formation Deposited carbon Double hydroxides ethanol dehydration ethanol steam reforming high stability Hydrogen Energy In order International association Metal particle (MP) nickel catalysts Significant reduction Ethanol Aluminum Aluminum Oxide Carbon Catalysts Dehydration Deposition Ethanol Ethylene Hydrogen Nickel Compounds Printing Plates Steam Ethanol steam reforming is an interesting alternative for hydrogen production since ethanol can be renewably obtained. Use of lamellar double hydroxides (LDHs) as precursors of nickel catalysts leads to highly dispersed metal particles in an aluminium structure. In this sense, a Ni(II)Al(III) catalyst was synthesized from a LDH precursor and tested in ethanol steam reforming. Although this catalyst presents high stability, acidity of alumina promotes carbon deposition from ethylene through ethanol dehydration. For this reason, in order to neutralize acid sites, a series of catalysts was prepared by Mg addition to LDH precursors varying Mg/Ni ratio. The effect of Mg/Ni ratio in the catalyst on coke formation during ethanol steam reforming was studied, resulting in significant reduction of the amount of deposited carbon for Mg/Ni ratio higher than 0.1. Moreover, Mg addition increases the catalytic activity due to lower ethylene formation, which competes with ethanol for the same Ni active sites. © 2007 International Association for Hydrogen Energy. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03603199_v33_n13_p3489_Vizcaino |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Carbon deposits Ethanol Hydrogen Steam reforming Addition reactions Aluminum Aluminum cladding Catalysis Catalyst activity Catalysts Ethylene Gas fuel manufacture Hydrogen Hydrogen production Magnesium printing plates Nickel Nickel alloys Steam Steam engineering acid sites Active sites Al(III) Aluminium structures Carbon deposition Catalytic activities Coke formation Deposited carbon Double hydroxides ethanol dehydration ethanol steam reforming high stability Hydrogen Energy In order International association Metal particle (MP) nickel catalysts Significant reduction Ethanol Aluminum Aluminum Oxide Carbon Catalysts Dehydration Deposition Ethanol Ethylene Hydrogen Nickel Compounds Printing Plates Steam |
| spellingShingle |
Carbon deposits Ethanol Hydrogen Steam reforming Addition reactions Aluminum Aluminum cladding Catalysis Catalyst activity Catalysts Ethylene Gas fuel manufacture Hydrogen Hydrogen production Magnesium printing plates Nickel Nickel alloys Steam Steam engineering acid sites Active sites Al(III) Aluminium structures Carbon deposition Catalytic activities Coke formation Deposited carbon Double hydroxides ethanol dehydration ethanol steam reforming high stability Hydrogen Energy In order International association Metal particle (MP) nickel catalysts Significant reduction Ethanol Aluminum Aluminum Oxide Carbon Catalysts Dehydration Deposition Ethanol Ethylene Hydrogen Nickel Compounds Printing Plates Steam Vizcaíno, A.J. Arena, P. Baronetti, G. Carrero, A. Calles, J.A. Laborde, M.A. Amadeo, N. Ethanol steam reforming on Ni/Al2O3 catalysts: Effect of Mg addition |
| topic_facet |
Carbon deposits Ethanol Hydrogen Steam reforming Addition reactions Aluminum Aluminum cladding Catalysis Catalyst activity Catalysts Ethylene Gas fuel manufacture Hydrogen Hydrogen production Magnesium printing plates Nickel Nickel alloys Steam Steam engineering acid sites Active sites Al(III) Aluminium structures Carbon deposition Catalytic activities Coke formation Deposited carbon Double hydroxides ethanol dehydration ethanol steam reforming high stability Hydrogen Energy In order International association Metal particle (MP) nickel catalysts Significant reduction Ethanol Aluminum Aluminum Oxide Carbon Catalysts Dehydration Deposition Ethanol Ethylene Hydrogen Nickel Compounds Printing Plates Steam |
| description |
Ethanol steam reforming is an interesting alternative for hydrogen production since ethanol can be renewably obtained. Use of lamellar double hydroxides (LDHs) as precursors of nickel catalysts leads to highly dispersed metal particles in an aluminium structure. In this sense, a Ni(II)Al(III) catalyst was synthesized from a LDH precursor and tested in ethanol steam reforming. Although this catalyst presents high stability, acidity of alumina promotes carbon deposition from ethylene through ethanol dehydration. For this reason, in order to neutralize acid sites, a series of catalysts was prepared by Mg addition to LDH precursors varying Mg/Ni ratio. The effect of Mg/Ni ratio in the catalyst on coke formation during ethanol steam reforming was studied, resulting in significant reduction of the amount of deposited carbon for Mg/Ni ratio higher than 0.1. Moreover, Mg addition increases the catalytic activity due to lower ethylene formation, which competes with ethanol for the same Ni active sites. © 2007 International Association for Hydrogen Energy. |
| format |
JOUR |
| author |
Vizcaíno, A.J. Arena, P. Baronetti, G. Carrero, A. Calles, J.A. Laborde, M.A. Amadeo, N. |
| author_facet |
Vizcaíno, A.J. Arena, P. Baronetti, G. Carrero, A. Calles, J.A. Laborde, M.A. Amadeo, N. |
| author_sort |
Vizcaíno, A.J. |
| title |
Ethanol steam reforming on Ni/Al2O3 catalysts: Effect of Mg addition |
| title_short |
Ethanol steam reforming on Ni/Al2O3 catalysts: Effect of Mg addition |
| title_full |
Ethanol steam reforming on Ni/Al2O3 catalysts: Effect of Mg addition |
| title_fullStr |
Ethanol steam reforming on Ni/Al2O3 catalysts: Effect of Mg addition |
| title_full_unstemmed |
Ethanol steam reforming on Ni/Al2O3 catalysts: Effect of Mg addition |
| title_sort |
ethanol steam reforming on ni/al2o3 catalysts: effect of mg addition |
| url |
http://hdl.handle.net/20.500.12110/paper_03603199_v33_n13_p3489_Vizcaino |
| work_keys_str_mv |
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1807319655606386688 |