Zobrazeno 1 - 10
of 81
pro vyhledávání: '"J. R. Gancedo"'
Autor:
P. Crespo, D. R. M. Walton, J. R. Gancedo, J. M. González, Harold W. Kroto, Mauricio Terrones, C. Prados, Nicole Grobert, José F. Marco, Antonio Hernando
Publikováno v:
Industrial Applications of the Mössbauer Effect ISBN: 9789401039505
Fe-57 transmission Mossbauer at temperatures between 18 and 298 K and magnetic measurements have been used to characterize Fe-filled carbon nanotubes which were prepared by pyrolisis of Ferrocene + C-60 at atmospheric pressure under an Ar atmosphere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79cdbfe947d8ea71e4097c1169bb8a08
https://ora.ox.ac.uk/objects/uuid:20cda340-4b52-4233-97a4-dcb4e5e34000
https://ora.ox.ac.uk/objects/uuid:20cda340-4b52-4233-97a4-dcb4e5e34000
Corrosion behavior under accelerated SO2 corrosion tests of thin iron nitride films prepared by DIBS
Autor:
Mercedes Gracia, José F. Marco, Pilar Prieto, J. R. Gancedo, F. Moutinho, José Sanz, T. Herranz
Publikováno v:
Surface and Interface Analysis. 42:616-620
We report on the corrosion behavior of thin films, prepared by dual ion beam sputtering (DIBS), containing different concentrations of γ'-and e-iron nitride phases. When deposited on Si wafers, the film containing almost equal amounts of γ'-Fe 4 N
Autor:
S. Abarca, E. Rios, P. Daccarett, Juan Luis Gautier, D. Martel, H. Nguyen Cong, José F. Marco, J. R. Gancedo
Publikováno v:
International Journal of Hydrogen Energy. 33:4945-4954
Spinel-type binary transition metal oxides of copper and manganese with composition Cu x Mn 3− x O 4 (with x = 1.0; 1.1; 1.2; 1.3 and 1.4) were prepared in powder forms by thermal decomposition of nitrate precursors at different temperatures. Their
Autor:
José Luis García Fierro, Mercedes Gracia, Pilar Terreros, Sergio Rojas, J. R. Gancedo, T. Herranz, M. López Granados, Francisco J. Pérez-Alonso, M. Ojeda
Publikováno v:
Green Chem.. 9:663-670
Two Fe–Ce catalysts were prepared by wet impregnation of Ce onto iron oxyhydroxide (FeOOH) and hematite iron oxide (α-Fe2O3), respectively. Their performance in the Fischer–Tropsch (FT) synthesis was investigated and compared with that obtained
Publikováno v:
Hyperfine Interactions. 166:449-453
We report here on the characterisation by temperature programmed reduction, 57Fe Mossbauer spectroscopy and X-ray absorption spectroscopy of the phases resulting from treatment of the perovskite-related material La0.5Sr0.5Fe0.5Co0.5O3 in a flowing 90
Publikováno v:
SOLID STATE IONICS
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
In this work, we have studied the multilayered polypyrrole(PPy)/oxide composite electrode on glassy carbon (GC) having the structure GC/PPy/PPy(Cu 1.4 Mn 1.6 O 4 )/PPy using X-ray Photoelectron Spectroscopy and Mn K-edge and Cu K-edge XANES and EXAFS
Autor:
J. Osorio, Juan Gabriel Ramírez, J. R. Gancedo, J. D. Uribe, A. Devia, Alvaro Morales, María Elena Pardo Gómez, C. A. Barrero, D. Giratá
Publikováno v:
Hyperfine Interactions. 169:1355-1362
We have grown hematite (α − Fe 2 O 3) thin films on stainless steel and (001)-silicon single-crystal substrates by RF magnetron sputtering process in argon atmosphere at substrate temperatures from 400 to 800°C. Conversion Electron Mossbauer (CEM
Publikováno v:
Surface and Interface Analysis. 38:243-247
We have studied the corrosion behaviour of AlN and TiAlN coatings deposited by magnetron sputtering on pure iron substrates. The samples have been subjected to two different corrosion tests: (i) a Prohesion test and (ii) an accelerated corrosion test
Autor:
Manuel Ojeda, Francisco J. Pérez-Alonso, J. R. Gancedo, Mercedes Gracia, M. López Granados, Pilar Terreros, Sergio Rojas, T. Herranz, José Luis García Fierro
Publikováno v:
Chemistry of Materials. 17:2329-2339
Two series of Fe−Ce catalysts were prepared following two different methods: coprecipitation from Fe and Ce nitrate solutions and physical mixing of pure Fe and Ce precursors. Evidence of the presence of a chemical interaction between Fe and Ce was
Publikováno v:
Hyperfine Interactions. 161:139-145
An autonomous control system for Mossbauer spectrometry based on two modules has been designed and built. The first module operates as a multichannel analyzer for the acquisition and storage of spectra, and the second one is a driver unit which contr