fig1
Figure 1. Leaching of gold from used Au/ZnO catalysts assisted by oxidative carbonylation of amines. (A) Oxidative carbonylation of morpholine; (B) The photo of used Au/ZnO catalysts under different treatment atmospheres; Oxidative carbonylation of aniline, the photo of used Au/ZnO catalysts under different treatment atmospheres: (C) N2, (D) air, (E) CO, (F) CO/air.
