title: Study of the reactivity of silica supported tantalum catalysts with oxygen followed by in situ HEROS.
abstract: We report on the reactivity of grafted tantalum organometallic catalysts with molecular oxygen. The changes in the local Ta electronic structure were followed by in situ high-energy resolution off-resonant spectroscopy (HEROS). The results revealed agglomeration and formation of Ta dimers, which cannot be reversed. The process occurs independently of starting grafted complex.
authors.affiliation: Department of Physics, University of Fribourg, Fribourg, Switzerland. wojciech.blachucki@unifr.ch.
authors.forename: Wojciech
authors.initials: W
authors.lastname: Błachucki
authors.forename: Jakub
authors.initials: J
authors.lastname: Szlachetko
authors.forename: Yves
authors.initials: Y
authors.lastname: Kayser
authors.forename: Jean-Claude
authors.initials: JC
authors.lastname: Dousse
authors.forename: Joanna
authors.initials: J
authors.lastname: Hoszowska
authors.forename: Daniel L A
authors.initials: DL
authors.lastname: Fernandes
authors.forename: Jacinto
authors.initials: J
authors.lastname: Sá