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EnglishIn this work the performance of CaO-doped Ni/ZrO2 catalysts in ethanol steam reforming was studied. The addition of CaO did not affect the morphology or the crystalline structure of the support. On the contrary, Ni reducibility markedly increased. Moreover, the Lewis acidity of zirconia gradually decreased as the CaO content increased, thus inhibiting coke deposition and improving the carbon balance. The addition of a basic oxide helps to prevent some of the side reactions responsible for coke formation and deposition, that can gradually deactivate the catalyst.
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| Data di pubblicazione: | 2014 | |
| Titolo: | Ni/ZrO2 catalysts in ethanol steam reforming: Inhibition of coke formation by CaO-doping | |
| Autori: | Valentina Nichele; Michela Signoretto; Francesco Pinna; Federica Menegazzo; Ilenia Rossetti; Giuseppe Cruciani; Giuseppina Cerrato; Alessandro Di Michele | |
| Rivista: | APPLIED CATALYSIS. B, ENVIRONMENTAL | |
| Parole Chiave: | Nickel; Zirconia; Ethanol steam reforming; CaO-doping; Coking inhibition | |
| Abstract: | In this work the performance of CaO-doped Ni/ZrO2 catalysts in ethanol steam reforming was studied. The addition of CaO did not affect the morphology or the crystalline structure of the support. On the contrary, Ni reducibility markedly increased. Moreover, the Lewis acidity of zirconia gradually decreased as the CaO content increased, thus inhibiting coke deposition and improving the carbon balance. The addition of a basic oxide helps to prevent some of the side reactions responsible for coke formation and deposition, that can gradually deactivate the catalyst. | |
| Digital Object Identifier (DOI): | 10.1016/j.apcatb.2013.11.037 | |
| Handle: | http://hdl.handle.net/11392/2181612 | |
| Appare nelle tipologie: | 03.1 Articolo su rivista |
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