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- W3146432445 abstract "The effect of support nature on the catalytic performance of Ni-based catalysts for ethanol steam reforming (ESR) was investigated. Nickel catalysts supported on lanthanum-modified Al2O3, TiO2, Al2O3-TiO2 and Al-pillared bentonite (denoted as Clay) were prepared by impregnation, characterized by X-ray diffraction (XRD), N2 adsoption-desorption, IR spectroscopy of acetonitrile adsorption and thermogravimetric analysis (TGA), and evaluated at 500 °C under atmospheric pressure. Both Ni/La-Al2O3 and Ni/La-TiO2-Al2O3 exhibited the best stability, whereas Ni/La-TiO2 and Ni/La-Clay deactivated quickly but with similar or higher H2 production. Catalyst deactivation was caused by carbon deposition, which formation was related to strong Brønsted sites. Efficiency of lanthanum as inhibitor of carbon deposition depended on the support nature. Oxidative regeneration allowed recovering initial activity of all used catalysts and even improving the performance of the latter two catalysts. This unexpected improvement can be due to change of nickel centres nature, caused by local overheating during the deposited carbon combustion." @default.
- W3146432445 created "2021-04-13" @default.
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- W3146432445 date "2021-06-01" @default.
- W3146432445 modified "2023-09-27" @default.
- W3146432445 title "Nickel catalysts promoted with lanthanum for ethanol steam reforming: Influence of support and treatment on activity" @default.
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- W3146432445 doi "https://doi.org/10.1016/j.apcata.2021.118141" @default.
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