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Abstract:

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.

Registro:

Documento: Artículo
Título:Ni(II)-Mg(II)-Al(III) catalysts for hydrogen production from ethanol steam reforming: Influence of the activation treatments
Autor:Romero, A.; Jobbágy, M.; Laborde, M.; Baronetti, G.; Amadeo, N.
Filiación:Laboratorio de Procesos Catalíticos, Departamento de Ingeniería Química, Facultad de Ingeniería Ciudad Universitaria, 1428 Buenos Aires, Argentina
INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellon II, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Palabras clave: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
Año:2010
Volumen:149
Número:3-4
Página de inicio:407
Página de fin:412
DOI: http://dx.doi.org/10.1016/j.cattod.2009.05.026
Título revista:Catalysis Today
Título revista abreviado:Catal Today
ISSN:09205861
CODEN:CATTE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09205861_v149_n3-4_p407_Romero

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Citas:

---------- APA ----------
Romero, A., Jobbágy, M., Laborde, M., Baronetti, G. & Amadeo, N. (2010) . Ni(II)-Mg(II)-Al(III) catalysts for hydrogen production from ethanol steam reforming: Influence of the activation treatments. Catalysis Today, 149(3-4), 407-412.
http://dx.doi.org/10.1016/j.cattod.2009.05.026
---------- CHICAGO ----------
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" . Catalysis Today 149, no. 3-4 (2010) : 407-412.
http://dx.doi.org/10.1016/j.cattod.2009.05.026
---------- MLA ----------
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" . Catalysis Today, vol. 149, no. 3-4, 2010, pp. 407-412.
http://dx.doi.org/10.1016/j.cattod.2009.05.026
---------- VANCOUVER ----------
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. Catal Today. 2010;149(3-4):407-412.
http://dx.doi.org/10.1016/j.cattod.2009.05.026