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- W4280629227 endingPage "102057" @default.
- W4280629227 startingPage "102057" @default.
- W4280629227 abstract "The production of either CO or CH4 via the hydrogenation of CO2 is amongst the most promising routes for CO2 utilization. However, kinetic barriers necessitate the use of a catalyst, with Ni/CeO2 being one of the most investigated systems. Nevertheless, surface chemistry fine-tuning via appropriate promotional routes can induce significant modifications on the solid-state properties of catalysts and in turn on their activity/selectivity. In the present work, we originally report on the outstanding selectivity alteration of Ni/CeO2 by ZnO doping. Specifically, Ni-based catalysts supported on ZnO, CeO2 nanorods or a mixed ZnO-CeO2 oxide were synthesized by a modified hydrothermal method and characterized by various physicochemical methods. Notable changes in the reaction pathway were demonstrated, as the presence of ZnO largely favored CO production at T < 450 oC for both Ni/ZnO and Ni/ZnO-CeO2, whereas Ni/CeO2 was completely selective to CH4. These findings were interpreted on the basis of ZnO-induced inhibitory effects on key activity/selectivity descriptors like the redox and basic properties, as well as on the adsorption affinity of CO species, which are considered as intermediate species for CO2 methanation." @default.
- W4280629227 created "2022-05-22" @default.
- W4280629227 creator A5025802769 @default.
- W4280629227 creator A5026909189 @default.
- W4280629227 creator A5028840150 @default.
- W4280629227 creator A5040957053 @default.
- W4280629227 creator A5072505572 @default.
- W4280629227 creator A5080409126 @default.
- W4280629227 creator A5083292047 @default.
- W4280629227 date "2022-07-01" @default.
- W4280629227 modified "2023-10-15" @default.
- W4280629227 title "Support-induced modifications on the CO2 hydrogenation performance of Ni/CeO2: The effect of ZnO doping on CeO2 nanorods" @default.
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