Table 2. Catalytic Performance Results of CuO/AC Catalysts^a.

catalyst	XGly (%)	Slactic acid (%)	Ylactic acid (%)	C balance (%)
AC	57.23	13.37	7.65	51.20
CuO	97.75	56.89	55.61	57.86
5% CuO/AC	74.08	75.28	55.77	81.69
10% CuO/AC	86.11	81.56	70.23	84.12
15% CuO/AC	84.79	82.26	69.75	84.96
20% CuO/AC	64.18	26.30	16.88	67.70

^aReaction conditions: 20 wt % glycerol aqueous solution, glycerol/NaOH molar ratio of 1:1, catalyst amount of 0.6 g, reaction temperature of 200 °C, and reaction time of 5 h.