fig2
Figure 2. A: Catalytic performance of different NDs-based catalysts; 2 mmol aminophenol, 2.2 mmol benzaldehyde, 10 mL xylene, 40 mg catalyst, 140 °C, t = 2 h, 1 bar O2; Quantitative analysis was carried out by GC using nitrobenzene as internal standard; B: Product structure identification by GC-MS; C: Plot of conversion of aminophenol and yield of 2-phenyl benzoxazole after five runs on NND900; 2 mmol 2-aminophenol; 2.2 mmol benzaldehyde; 10 mL xylene; 120 mg catalyst; T = 140 oC; Time = 12 h.
