Very Low Rate Constants of Bimolecular CO Adsorption on Anionic Gold Clusters: Implications for Catalytic Activity

0181597 - UFCH-W 20030024 RIV GB eng J - Článek v odborném periodiku
Balteanu, I. - Balaj, O. P. - Fox, B. S. - Beyer, M. K. - Bastl, Zdeněk - Bondybey, V. E.
Very Low Rate Constants of Bimolecular CO Adsorption on Anionic Gold Clusters: Implications for Catalytic Activity.
Physical Chemistry Chemical Physics. Roč. 5, - (2003), s. 1213-1218. ISSN 1463-9076. E-ISSN 1463-9084
Výzkumný záměr: CEZ:AV0Z4040901
Klíčová slova: bimolecular * adsorption * catalytic activity
Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
Impakt faktor: 1.959, rok: 2003

Absolute bimolecular rate constants for radiative stabilization of CO on gold cluster anions are measured by Fourier-transform ion cyclotron resonance (FT-ICR) mass spectrometry, employing a sequence of reaction gas pulses to acquire sufficient product intensities of these exceedingly inefficient reactions. While some of the observed reactivity patterns seem to be in agreement with the jellium model if CO is viewed as a two electron donor, it can not provide explanation for some other observations, for instance for the secondary reactions of Au10- and Au11-. Interesting cooperative effects are observed in conjunction with O2, which is present as a trace component of the reaction gas. No evidence is found for catalytic CO2 formation on the clusters.
Trvalý link: http://hdl.handle.net/11104/0078140