Gold catalysts prepared by coprecipitation for low-temperature oxidation of hydrogen and of carbon monoxide

CO Oxidation Catalyzed by Oxide-Supported Au25(SR)18 Nanoclusters and Identification of Perimeter Sites as Active Centers

“…It is wellknown that the supports of Au catalysts have important influences on the catalytic performance. 2,5,6 We chose TiO 2 , CeO 2 , and Fe 2 O 3 as supports for Au 25 (SR) 18 . According to our measurements, the plain TiO 2 and CeO 2 supports were essentially inert below 200°C, while Fe 2 O 3 shows some activity for CO oxidation above 120°C.…”

Nanocrystals: Solution-based synthesis and applications as nanocatalysts

“…Undoubtedly, the emergence and development of nanoscience and nanotechnology bring new opportunities to this area. As early as 1989, nanoscale Au particles were shown to be catalytically active for low-temperature CO oxidation by the Haruta group for the first time [64]. This result changed the conventional idea that Au is always very unreactive, as it is in the bulk state, and opened the door to interesting applications of nanoscale materials in catalysis.…”

Synergy between gold and oxygen vacancies in gold supported on Zr-doped ceria catalysts for the CO oxidation

“…Since Haruta's pioneering work, it has been widely probed that when depositing gold on different supports as ultra-fine particles its chemistry changes dramatically, becoming extraordinarily active in oxidation reactions at low temperature [18,19] On the other hand, Perret et al [24] have synthesized Au/Ce 0.62 Zr 0.38 O 2 for the selective hydrogenation of benzoic acid in order to produce benzyl alcohol. The easy production of oxygen vacancies by the inclusion of Zr drives to the hydrogenation of an aqueous benzoic acid feed towards benzaldehyde and benzyl alcohol with a high rate because of the activation of the carboxyl function for hydrogen attack by the oxygen vacancies.…”