High Activity of Ce1−xNixO2−y for H2 Production through Ethanol Steam Reforming: Tuning Catalytic Performance through Metal–Oxide Interactions

Authors


  • The research at BNL was financed by the US Department of Energy (DOE), Chemical Sciences Division, Office of Basic Energy Science (DE-AC02-98CH10086). The National Synchrotron Light Source is supported by the Divisions of Materials and Chemical Sciences of the US DOE. L.B. acknowledges funding by the FP7 People program under the project Marie Curie IOF-219674. J.E. thanks INTEVEP and IDB for research grants that made possible part of this research at the Universidad Central de Venezuela. Research at the ICP-CSIC was financed by the Comunidad de Madrid (DIVERCEL S2009/ENE-1745) and the MICINN (CTQ2006-15600/BQU and CTQ2009-14527/BQU), to whom we are grateful.

Abstract

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The importance of the oxide: Ce0.8Ni0.2O2−y is an excellent catalyst for ethanol steam reforming (see graph). Metal–oxide interactions perturb the electronic properties of the small particles of metallic nickel present in the catalyst under the reaction conditions and thus suppress any methanation activity. The nickel embedded in ceria induces the formation of O vacancies, which facilitate cleavage of the O[BOND]H bonds in ethanol and water.

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