Gold as active phase of BN-supported catalysts for lactose oxidation

- Au/h-BN catalysts were very active and selective in lactose oxidation.
- Au/γ-Al2O3 catalyst was more active after a second run but less selective.
- The main cause of deactivation was identified as surface poisoning.
- Au/h-BN catalyst was more active after regeneration due to facile surface cleaning.