Cryogenic CO2 formation on oxidized gold clusters synthesized via reactive layer assisted deposition.
Gas-phase Au atoms deposited onto a multilayer film of molecular oxygen produce atomic oxygen bound to gold clusters. After removal of molecular O2, temperature programmed desorption and molecular beam techniques show that the atomic oxygen readily reacts with CO to produce CO2. At present, the structure and size distribution of these clusters are unknown. Nevertheless, CO2 forms on these clusters upon exposure to CO at temperatures as low as 35 K. Furthermore, above 120 K, the reaction goes to completion with initial reaction yields as high as 50%.
Kim
Jooho
J
Chemical Sciences Division, Fundamental Science Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, USA.
Dohnálek
Zdenek
Z
Kay
Bruce D
BD
D002245:Carbon Dioxide / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry; D013696:Temperature; D013997:Time Factors
D002245:Carbon Dioxide; D006046:Gold; D010100:Oxygen