Synthesis of Glycerol Carbonate from Glycerol and Dimethyl Carbonate Catalyzed by Solid Base Catalyst Derived from Waste Carbide Slag

Table 3

Comparison of the 15 wt.% Na₂CO₃-CS-800 with recently reported heterogeneous catalysts.

Entry	Catalyst	Feedstock	Yieldf (%)^a	Reuse times	Yieldr (%)^b	Ref.
1	CaO	Commercial CaO	95.3	3	17.8	[58]
2	RM-500	Red mud	92.0	4	8.2	[41]
3	EFB-500	Oil palm empty fruit bunch	95.7	4	85.2	[59]
4	DW-Ni-700	Diaper waste, Ni(NO3)2	96.9	4	89.6	[40]
5	15 wt.% Na2CO3-CS-800	CS	96.0	4	83.2	Present work

^aGC yield when the fresh catalyst was applied. ^bGC yield after the catalyst was recycled for several times.