Glycerol steam reforming over Ni/γ-Al2O3 catalysts, modified with Mg(II). Effect of Mg (II) content
Ni based catalysts supported over γ-Al2O3, previously modified with increasing contents of Mg(II), were employed for the steam reforming of glycerol. The aim of the present study is to analyze the effect of the content of Mg(II), as a promoter of Ni/γ-Al 2O3 catalysts, on the textural and structural...
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| Formato: | Capítulo de libro |
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2013
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| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
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| LEADER | 07977caa a22008417a 4500 | ||
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| 001 | PAPER-11268 | ||
| 003 | AR-BaUEN | ||
| 005 | 20240927143421.0 | ||
| 008 | 190411s2013 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-84880278891 | |
| 030 | |a CATTE | ||
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Dieuzeide, M.L. | |
| 245 | 1 | 0 | |a Glycerol steam reforming over Ni/γ-Al2O3 catalysts, modified with Mg(II). Effect of Mg (II) content |
| 260 | |c 2013 | ||
| 270 | 1 | 0 | |m Amadeo, N.; Laboratorio de Procesos Catalíticos, Departamento de Ing. Química, Universidad de Buenos Aires, Pabellon de Industrias, Ciudad Universitaria, 1428 CABA, Argentina; email: norma@di.fcen.uba.ar |
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| 506 | |2 openaire |e Política editorial | ||
| 520 | 3 | |a Ni based catalysts supported over γ-Al2O3, previously modified with increasing contents of Mg(II), were employed for the steam reforming of glycerol. The aim of the present study is to analyze the effect of the content of Mg(II), as a promoter of Ni/γ-Al 2O3 catalysts, on the textural and structural characteristics of the solid; as well as on the catalytic activity and selectivity to H2 in the steam reforming of glycerol. Fresh samples were characterized by PXRD, BET surface area, H2 chemisorption, TPR, and CO2-TPD. Used catalysts were analyzed by TPO, in order to study the effect of Mg(II) on carbon gasification. Both fresh and used samples were examined by SEM. The content of Mg(II) has both an effect on the catalytic performance and on the structural and textural characteristics of the catalysts. The incorporation of Mg(II) results in the formation of Mg1-xAl 2O4-x spinel phase. The differences in catalytic properties due to the increasing content of Mg(II) have effect simultaneously on the Ni crystallite size, on the acidic-basic character and on the interactions between NiO and support. For the catalysts promoted with Mg(II), the best activity for the steam reforming of glycerol was achieved with Ni(10)Mg(3)Al catalyst while the Ni(10)Mg(15)Al catalyst formed the lowest amount of carbon during reaction time on stream. The catalyst prepared without Mg(II) presented good activity results despite the lowest Ni dispersion. This behaviour was assigned to the presence of Ni sites more active for the steam reforming of glycerol than the ones on the catalyst promoted with Mg(II). However, this catalyst had the highest carbon deposition during reaction time on stream. High contents of Mg(II) inhibited carbon formation, this was evidenced by TPO analyses performed to used samples. Low carbon formation at high Mg(II) could be related to the higher basic character of the support as the content of Mg(II) increases. © 2013 Elsevier B.V. All rights reserved. |l eng | |
| 593 | |a Laboratorio de Procesos Catalíticos, Departamento de Ing. Química, Universidad de Buenos Aires, Pabellon de Industrias, Ciudad Universitaria, 1428 CABA, Argentina | ||
| 593 | |a INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, Ciudad Universitaria, 1428 C.A.B.A., Argentina | ||
| 650 | 1 | 7 | |2 spines |a CARBON |
| 690 | 1 | 0 | |a GLYCEROL NI/Γ-AL2O3 MG(II) STEAM REFORMING |
| 690 | 1 | 0 | |a ACTIVITY RESULTS |
| 690 | 1 | 0 | |a CARBON DEPOSITION |
| 690 | 1 | 0 | |a CARBON GASIFICATION |
| 690 | 1 | 0 | |a CATALYTIC PERFORMANCE |
| 690 | 1 | 0 | |a CATALYTIC PROPERTIES |
| 690 | 1 | 0 | |a STEAM REFORMING OF GLYCEROLS |
| 690 | 1 | 0 | |a STRUCTURAL CHARACTERISTICS |
| 690 | 1 | 0 | |a TEXTURAL CHARACTERISTIC |
| 690 | 1 | 0 | |a ALUMINUM |
| 690 | 1 | 0 | |a CARBON DIOXIDE |
| 690 | 1 | 0 | |a CATALYST ACTIVITY |
| 690 | 1 | 0 | |a CATALYST SELECTIVITY |
| 690 | 1 | 0 | |a GLYCEROL |
| 690 | 1 | 0 | |a NICKEL |
| 690 | 1 | 0 | |a STEAM REFORMING |
| 690 | 1 | 0 | |a CATALYST SUPPORTS |
| 700 | 1 | |a Jobbagy, M. | |
| 700 | 1 | |a Amadeo, Norma Elvira | |
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