Structure/redox/activity relationships in CeO2/CuMn2O4 CO-PROX catalysts
tCuMn2O4prepared by a microemulsion method is employed as support of ceria with different loadinglevel (between 5 and 80 wt.%) and the CO-PROX properties of corresponding catalysts are explored. Thecatalysts have been characterized by XRD, SBETmeasurement, HREM and XEDS, XPS and TPR, which allowsest...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/414535 |
| Acceso en línea: | http://hdl.handle.net/10261/414535 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020033624&doi=10.1016%2Fj.apcatb.2017.05.070&partnerID=40&md5=188d3e8e09816fbde8653dc57b8f3962 |
| Access Level: | acceso abierto |
| Palabra clave: | CO oxidation CO-PROX Hydrogen purification Nanostructured CeO2/CuMn2O4 catalysts |
| Sumario: | tCuMn2O4prepared by a microemulsion method is employed as support of ceria with different loadinglevel (between 5 and 80 wt.%) and the CO-PROX properties of corresponding catalysts are explored. Thecatalysts have been characterized by XRD, SBETmeasurement, HREM and XEDS, XPS and TPR, which allowsestablishing a complete model of the structural and chemical characteristics of the catalysts. The charac-terization results have been correlated with the analysis of CO-PROX catalytic properties performed bymeans of activity measurements complemented by operando-DRIFTS. Important differences in structural,redox and catalytic properties are detected as a function of the amount of ceria present in the catalyst.These are shown to depend basically on the size of the supported ceria nanocrystals as well as the factthat the increase in the ceria loading gradually increases the interfacial character of surface exposed sitesof the support with important implications for the CO-PROX properties of the catalyst.© 2017 Elsevier B.V. All rights reserved |
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