Cataloged from PDF version of article.Ru(NO)(N0&/Si02 catalyst precursors were characterized via XPS and in-situ reflectance IR spectroscopy before, during
and after reduction by hydrogen over the temperature range 300-800 K. IR results indicated that the catalyst precursor lost NO3
groups first, with subsequent loss of NO both in a reducing atmosphere and during thermal annealing. XPS was used to derive
information on the oxidation state of Ru in the various steps of the annealing and/or reduction processes. 0 1997 Elsevier
Science B.V