Table 7. Validation of the predicted and experimental GC yields at the optimum reaction condition^a.

Predicted GC yield (%)	Experimental GC yield (%)	Error (%)
59.75	58.77	1.64

^aReaction conditions: catalyst loading of 5.15 wt%, DMC: enriched glycerol molar ratio of 4.24 : 1, reaction temperature of 86 °C, and reaction time of 165 min.