D
D. Gamarra
Researcher at Spanish National Research Council
Publications - 19
Citations - 2546
D. Gamarra is an academic researcher from Spanish National Research Council. The author has contributed to research in topics: Catalysis & Redox. The author has an hindex of 18, co-authored 19 publications receiving 2339 citations. Previous affiliations of D. Gamarra include Brookhaven College.
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Journal ArticleDOI
In Situ Studies of the Active Sites for the Water Gas Shift Reaction over Cu−CeO2 Catalysts: Complex Interaction between Metallic Copper and Oxygen Vacancies of Ceria
Xianqin Wang,José Antonio Lozano Rodríguez,Jonathan C. Hanson,D. Gamarra,Arturo Martínez-Arias,Marcos Fernández-García +5 more
TL;DR: This work identifies for the first time the active sites for the WGS reaction on Cu-CeO2 catalysts and illustrates the importance of in situ structural studies for heterogeneous catalytic reactions.
Journal ArticleDOI
Selective CO oxidation in excess H2 over copper-ceria catalysts: identification of active entities/species.
TL;DR: While CO oxidation takes place at copper oxide support interfacial sites and its activity correlates with the degree of reduction achieved on the dispersed copper oxide particles, H2 oxidation apparently proceeds when a massive copper oxide reduction occurs.
Journal ArticleDOI
Structure−Activity Relationship in Nanostructured Copper−Ceria-Based Preferential CO Oxidation Catalysts
D. Gamarra,Guillermo Munuera,Ana B. Hungría,Marcos Fernández-García,José C. Conesa,Paul A. Midgley,Xianqin Wang,Jonathan C. Hanson,José Antonio Lozano Rodríguez,Arturo Martínez-Arias +9 more
TL;DR: Two series of nanostructured oxidized copper−cerium catalysts with varying copper loadings, respectively, by impregnation of ceria and by coprecipitation of the two components within...
Journal ArticleDOI
Unusual physical and chemical properties of Cu in Ce1-xCuxO2 oxides
Xianqin Wang,José A. Rodriguez,Jonathan C. Hanson,D. Gamarra,Arturo Martínez-Arias,Marcos Fernández-García +5 more
TL;DR: The structural and electronic properties of the Ce1-xCuxO2 nano systems were characterized with synchrotron-based X-ray diffraction, Xray absorption spectroscopy, and density functional calculations as mentioned in this paper.
Journal ArticleDOI
Preferential oxidation of CO in rich H2 over CuO/CeO2: Operando-DRIFTS analysis of deactivating effect of CO2 and H2O
D. Gamarra,Arturo Martínez-Arias +1 more
TL;DR: In this paper, the deactivating effects produced by CO2 or H2O presence on its activity for preferential oxidation of CO in a H2-rich stream were explored by means of operando-DRIFTS experiments.