Ni(II)-Mg(II)-Al(III) catalysts for hydrogen production from ethanol steam reforming: Influence of the activation treatments
The effect of the Ni(II)-Mg(II)-Al(III) layered double hydroxide (LDH) activation conditions over the surface and bulk composition and the catalytic performance in ethanol steam reforming (ESR) is studied. Ternary oxides were prepared by thermal decomposition of LDHs synthesized using the homogeneou...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_09205861_v149_n3-4_p407_Romero |
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todo:paper_09205861_v149_n3-4_p407_Romero2023-10-03T15:44:56Z Ni(II)-Mg(II)-Al(III) catalysts for hydrogen production from ethanol steam reforming: Influence of the activation treatments Romero, A. Jobbágy, M. Laborde, M. Baronetti, G. Amadeo, N. Bioethanol Hydrogen production LDH Ni catalyst Reforming Activation conditions Activation treatment Bulk compositions Catalyst precursors Catalytic performance Demixing process Direct Reduction Ethanol steam reforming Homogeneous precipitation method Layered double hydroxides LDH Ni catalysts Photoelectronic spectroscopy Spinel-type Subsequent reduction Temperature-programming Ternary oxides Thermal decompositions Thermal treatment Bioethanol Calcination Catalysis Catalyst activity Chemical analysis Chemisorption Electroslag remelting Ethanol Gas producers Heat treatment Nickel Precipitation (chemical) Pyrolysis Reaction kinetics Steam engineering Thermogravimetric analysis Urea X ray diffraction analysis Hydrogen production The effect of the Ni(II)-Mg(II)-Al(III) layered double hydroxide (LDH) activation conditions over the surface and bulk composition and the catalytic performance in ethanol steam reforming (ESR) is studied. Ternary oxides were prepared by thermal decomposition of LDHs synthesized using the homogeneous precipitation method with urea. Catalyst precursor is submitted to two different activation treatments: calcinations at 400, 500, 600 and 700 °C with subsequent reduction at 720 °C, or direct reduction at 720 °C. The samples were characterized by sorptometry, H2 chemisorption, ICP chemical analysis, thermogravimetric analysis, X-ray diffraction, X-ray photoelectronic spectroscopy and temperature programming reduction. The catalysts obtained by calcination at 600 °C and then reduction at 720 °C and those directly reduced at 720 °C showed the better performance in ESR. The precursor submitted to a proper thermal treatment develops, through a decoration-demixing process, a Ni(II)-poor spinel-type shell onto NiO domains. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09205861_v149_n3-4_p407_Romero |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Bioethanol Hydrogen production LDH Ni catalyst Reforming Activation conditions Activation treatment Bulk compositions Catalyst precursors Catalytic performance Demixing process Direct Reduction Ethanol steam reforming Homogeneous precipitation method Layered double hydroxides LDH Ni catalysts Photoelectronic spectroscopy Spinel-type Subsequent reduction Temperature-programming Ternary oxides Thermal decompositions Thermal treatment Bioethanol Calcination Catalysis Catalyst activity Chemical analysis Chemisorption Electroslag remelting Ethanol Gas producers Heat treatment Nickel Precipitation (chemical) Pyrolysis Reaction kinetics Steam engineering Thermogravimetric analysis Urea X ray diffraction analysis Hydrogen production |
| spellingShingle |
Bioethanol Hydrogen production LDH Ni catalyst Reforming Activation conditions Activation treatment Bulk compositions Catalyst precursors Catalytic performance Demixing process Direct Reduction Ethanol steam reforming Homogeneous precipitation method Layered double hydroxides LDH Ni catalysts Photoelectronic spectroscopy Spinel-type Subsequent reduction Temperature-programming Ternary oxides Thermal decompositions Thermal treatment Bioethanol Calcination Catalysis Catalyst activity Chemical analysis Chemisorption Electroslag remelting Ethanol Gas producers Heat treatment Nickel Precipitation (chemical) Pyrolysis Reaction kinetics Steam engineering Thermogravimetric analysis Urea X ray diffraction analysis Hydrogen production Romero, A. Jobbágy, M. Laborde, M. Baronetti, G. Amadeo, N. Ni(II)-Mg(II)-Al(III) catalysts for hydrogen production from ethanol steam reforming: Influence of the activation treatments |
| topic_facet |
Bioethanol Hydrogen production LDH Ni catalyst Reforming Activation conditions Activation treatment Bulk compositions Catalyst precursors Catalytic performance Demixing process Direct Reduction Ethanol steam reforming Homogeneous precipitation method Layered double hydroxides LDH Ni catalysts Photoelectronic spectroscopy Spinel-type Subsequent reduction Temperature-programming Ternary oxides Thermal decompositions Thermal treatment Bioethanol Calcination Catalysis Catalyst activity Chemical analysis Chemisorption Electroslag remelting Ethanol Gas producers Heat treatment Nickel Precipitation (chemical) Pyrolysis Reaction kinetics Steam engineering Thermogravimetric analysis Urea X ray diffraction analysis Hydrogen production |
| description |
The effect of the Ni(II)-Mg(II)-Al(III) layered double hydroxide (LDH) activation conditions over the surface and bulk composition and the catalytic performance in ethanol steam reforming (ESR) is studied. Ternary oxides were prepared by thermal decomposition of LDHs synthesized using the homogeneous precipitation method with urea. Catalyst precursor is submitted to two different activation treatments: calcinations at 400, 500, 600 and 700 °C with subsequent reduction at 720 °C, or direct reduction at 720 °C. The samples were characterized by sorptometry, H2 chemisorption, ICP chemical analysis, thermogravimetric analysis, X-ray diffraction, X-ray photoelectronic spectroscopy and temperature programming reduction. The catalysts obtained by calcination at 600 °C and then reduction at 720 °C and those directly reduced at 720 °C showed the better performance in ESR. The precursor submitted to a proper thermal treatment develops, through a decoration-demixing process, a Ni(II)-poor spinel-type shell onto NiO domains. |
| format |
JOUR |
| author |
Romero, A. Jobbágy, M. Laborde, M. Baronetti, G. Amadeo, N. |
| author_facet |
Romero, A. Jobbágy, M. Laborde, M. Baronetti, G. Amadeo, N. |
| author_sort |
Romero, A. |
| title |
Ni(II)-Mg(II)-Al(III) catalysts for hydrogen production from ethanol steam reforming: Influence of the activation treatments |
| title_short |
Ni(II)-Mg(II)-Al(III) catalysts for hydrogen production from ethanol steam reforming: Influence of the activation treatments |
| title_full |
Ni(II)-Mg(II)-Al(III) catalysts for hydrogen production from ethanol steam reforming: Influence of the activation treatments |
| title_fullStr |
Ni(II)-Mg(II)-Al(III) catalysts for hydrogen production from ethanol steam reforming: Influence of the activation treatments |
| title_full_unstemmed |
Ni(II)-Mg(II)-Al(III) catalysts for hydrogen production from ethanol steam reforming: Influence of the activation treatments |
| title_sort |
ni(ii)-mg(ii)-al(iii) catalysts for hydrogen production from ethanol steam reforming: influence of the activation treatments |
| url |
http://hdl.handle.net/20.500.12110/paper_09205861_v149_n3-4_p407_Romero |
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