Reactions of free silver anions with CO, and their mixtures are investigated in a temperature controlled radio frequency ion trap setup. Cluster anions readily react with molecular oxygen to yield 4, or 6) oxide products. In contrast, no reaction of the silver cluster anions with carbon monoxide is detected. However, if silver cluster anions are exposed to the mixture of and CO, new reaction products and a pronounced, discontinuous size dependence in the reaction behavior is observed. In particular, coadsorption complexes are detected for cluster sizes with and 6 and, the most striking observation, in the case of the larger odd atom number clusters and the oxide product concentration decreases while a reappearance of the bare metal cluster signal is observed. This leads to the conclusion that carbon monoxide reacts with the activated oxygen on these silver clusters and indicates the prevalence of a catalytic reaction cycle.
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1 February 2004
Letter|
February 01 2004
Strongly cluster size dependent reaction behavior of CO with on free silver cluster anions Available to Purchase
Liana D. Socaciu;
Liana D. Socaciu
Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
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Jan Hagen;
Jan Hagen
Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
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Jérôme Le Roux;
Jérôme Le Roux
Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
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Denisia Popolan;
Denisia Popolan
Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
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Thorsten M. Bernhardt;
Thorsten M. Bernhardt
Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
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Ludger Wöste;
Ludger Wöste
Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
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Štefan Vajda
Štefan Vajda
Argonne National Laboratory, Chemistry Division, Argonne, Illinois 60439
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Liana D. Socaciu
Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
Jan Hagen
Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
Jérôme Le Roux
Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
Denisia Popolan
Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
Thorsten M. Bernhardt
Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
Ludger Wöste
Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin, Germany
Štefan Vajda
Argonne National Laboratory, Chemistry Division, Argonne, Illinois 60439
J. Chem. Phys. 120, 2078–2081 (2004)
Article history
Received:
October 30 2003
Accepted:
December 05 2003
Citation
Liana D. Socaciu, Jan Hagen, Jérôme Le Roux, Denisia Popolan, Thorsten M. Bernhardt, Ludger Wöste, Štefan Vajda; Strongly cluster size dependent reaction behavior of CO with on free silver cluster anions. J. Chem. Phys. 1 February 2004; 120 (5): 2078–2081. https://doi.org/10.1063/1.1644103
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