Not all that glitters…︁ The activity of supported gold nanoparticles depends on the method used for their preparation. Gold clusters of about 2 nm in diameter were deposited on nonreducible metal oxides and carbon materials by solid grinding of a volatile organogold complex in a ball mill and subsequent calcination (see scheme). Au/ZrO2 and Au/Al2O3 prepared in this way were extremely efficient catalysts for the aerobic oxidation of glucose.
Nicht alles was glänzt …︁ Die Aktivität immobilisierter Gold‐Nanopartikel hängt von der Herstellungsmethode ab. Goldcluster mit 2 nm Durchmesser wurden auf nichtreduzierbaren Metalloxiden und Kohlenstoffmaterialien abgeschieden, indem ein fester flüchtiger Goldkomplex in einer Kugelmühle zermahlen und anschließend kalziniert wurde. So erzeugtes Au/ZrO2 und Au/Al2O3 sind extrem leistungsfähige Katalysatoren für die aerobe Oxidation von Glucose.
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