Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/106702
Author(s): V. P. Santos
S. A. C. Carabineiro
J. J. W. Bakker
O. S. G. P. Soares
X. Chen
M. F. R. Pereira
J. J. M. Orfão
J. L. Figueiredo
J. Gascon
F. Kapteijn
Title: Stabilized gold on cerium-modified cryptomelane: Highly active in low-temperature CO oxidation
Issue Date: 2014
Abstract: Cerium-doped cryptomelane stabilizes polyhedron Au nano-particles smaller than 3 nm. The obtained Au/Ce/cryptomelane catalyst is highly active for CO oxidation. Cationic, neutral, and anionic gold species were found on Ce/cryptomelane. The modification of cryptomelane by the addition of cerium is twofold: (i) cerium is incorporated in the tunnels of cryptomelane, increasing the number of defects which function as nucleation sites for gold and (ii) ceria nano-particles at the surface induce charge transfer between gold and cryptomelane. TOF for Au/Ce-K-OMS-2 is about twice that of Au/CeO2 prepared by the same procedure.
Subject: Engenharia química, Engenharia química
Chemical engineering, Chemical engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia química
Engineering and technology::Chemical engineering
URI: https://repositorio-aberto.up.pt/handle/10216/106702
Related Information: info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Programa de Financiamento Plurianual de Unidades de I&D/PEst-C/EQB/LA0020/2011/Projeto Estratégico-LA 20 - 2011-2012/LA 20
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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