@article{d3a5c0226a3143139948629eadaeceb4,
title = "Hydrogen and oxygen adsorption stoichiometries on silica supported ruthenium nanoparticles",
abstract = "Treatment under H2 at 300 °C of Ru(COD)(COT) dispersed on silica yields 2 nm ruthenium nanoparticles, [Rup/SiO2], according to EXAFS, HRTEM and XPS. H2 adsorption measurements on [Rup/SiO2] in the absence of O2 show that Ru particles adsorb up to ca. 2H per surface ruthenium atoms (2H/Rus) on various samples; this technique can therefore be used to measure the dispersion of Ru particles. In contrast, O2 adsorption on [Rup/SiO2] leads to a partial oxidation of the bulk at 25 °C, to RuO2 at 200 °C and to sintering upon further reduction under H2, showing that O2 adsorption cannot be used to measure the dispersion of Ru particles.",
keywords = "Adsorption, H, O, Particles, Ruthenium, Silica",
author = "Romain Berthoud and Pierre D{\'e}lich{\`e}re and David Gajan and Wayne Lukens and Katrin Pelzer and Basset, {Jean Marie} and Candy, {Jean Pierre} and Christophe Cop{\'e}ret",
note = "Funding Information: R.B. and D.G. thank le Minist{\`e}re de la Recherche et de l'Education and the R{\'e}gion Rh{\^o}ne-Alpes (Cluster 5) for graduate fellowships, respectively. We are all grateful to the CNRS (PICS program), CPE Lyon and IDECAT for financial supports. Portions of this work were performed at the LBNL, supported by the Director, Office of Science, Office of Basic Energy Sciences of the US Department of Energy under Contract No. DE-AC02-05CH11231, and at the Stanford Synchrotron Radiation Laboratory, a national user facility operated by Stanford University on behalf of the US Department of Energy, Office of Basic Energy Sciences. ",
year = "2008",
month = dec,
day = "10",
doi = "10.1016/j.jcat.2008.10.010",
language = "English (US)",
volume = "260",
pages = "387--391",
journal = "Journal of Catalysis",
issn = "0021-9517",
publisher = "Elsevier",
number = "2",
}