Coadsorption of CO and O2 on small free gold cluster anions at cryogenic temperatures: Model complexes for catalytic CO oxidation

The cluster ions Aun(CO)m(O2)u− (n = 2,3; m = 1, u = 1,2) are successfully synthesized via coadsorption of oxygen and carbon monoxide onto mass-selected gold clusters inside a temperature controlled ion trap at 100 K. The investigated gold clusters Au1–3− show a significant size dependence in the reactivity toward oxygen and carbon monoxide. Whereas no reaction products are detected for the monomer ion, simultaneous adsorption of CO and O2 onto the dimer leads to the formation of Au2(CO)(O2)− which is regarded as a model complex to study the mechanism of catalytic CO oxidation on gold clusters. In the case of Au3− the conditioning of the cluster by CO preadsorption is found essential to enable O2 coadsorption.     «

The cluster ions Aun(CO)m(O2)u− (n = 2,3; m = 1, u = 1,2) are successfully synthesized via coadsorption of oxygen and carbon monoxide onto mass-selected gold clusters inside a temperature controlled ion trap at 100 K. The investigated gold clusters Au1–3− show a significant size dependence in the reactivity toward oxygen and carbon monoxide. Whereas no reaction products are detected for the monomer ion, simultaneous adsorption of CO and O2 onto the dimer leads to the formation of Au2(CO)(O2)− w...     »

Oxidation (catalytic, mechanism coadsorption of CO and O2 on small free gold cluster anions at cryogenic temps. and model complexes for catalytic CO oxidn.) Cluster ions Oxidation catalysts (coadsorption of CO and O2 on small free gold cluster anions at cryogenic temps. and model complexes for catalytic CO oxidn.) Adsorption (coadsorption coadsorption of CO and O2 on small free gold cluster anions at cryogenic temps. and model complexes for catalytic CO oxidn.) carbon monoxide oxygen coadsorption gold cluster anion cryogenic temp model complex catalytic carbon monoxide oxidn     «

Oxidation (catalytic, mechanism coadsorption of CO and O2 on small free gold cluster anions at cryogenic temps. and model complexes for catalytic CO oxidn.) Cluster ions Oxidation catalysts (coadsorption of CO and O2 on small free gold cluster anions at cryogenic temps. and model complexes for catalytic CO oxidn.) Adsorption (coadsorption coadsorption of CO and O2 on small free gold cluster anions at cryogenic temps. and model complexes for catalytic CO oxidn.) carbon monoxide oxygen coadsorptio...     »

CAN 137:175485 67-3 Catalysis, Reaction Kinetics, and Inorganic Reaction Mechanisms Institut fuer Experimentalphysik, Freie Universitaet Berlin, Berlin, Germany. Journal 1463-9076 630-08-0D (Carbon monoxide); 7440-57-5D (Gold); 7782-44-7D (Oxygen) Role: CAT (Catalyst use), CPS (Chemical process), FMU (Formation, unclassified), PEP (Physical, engineering or chemical process), PRP (Properties), RCT (Reactant), FORM (Formation, nonpreparative), PROC (Process), USES (Uses), RACT (Reactant or reagent) (coadsorption of CO and O2 on small free gold cluster anions at cryogenic temps. and model complexes for catalytic CO oxidn.); 630-08-0 (Carbon monoxide); 7782-44-7 (Oxygen) Role: CPS (Chemical process), PEP (Physical, engineering or chemical process), PRP (Properties), RCT (Reactant), PROC (Process), RACT (Reactant or reagent) (coadsorption of CO and O2 on small free gold cluster anions at cryogenic temps. and model complexes for catalytic CO oxidn.)     «

CAN 137:175485 67-3 Catalysis, Reaction Kinetics, and Inorganic Reaction Mechanisms Institut fuer Experimentalphysik, Freie Universitaet Berlin, Berlin, Germany. Journal 1463-9076 630-08-0D (Carbon monoxide); 7440-57-5D (Gold); 7782-44-7D (Oxygen) Role: CAT (Catalyst use), CPS (Chemical process), FMU (Formation, unclassified), PEP (Physical, engineering or chemical process), PRP (Properties), RCT (Reactant), FORM (Formation, nonpreparative), PROC (Process), USES (Uses), RACT (Reactant or reage...     »