Synthesis and Characterization of 5-Hydroxymethylfurfural from Corncob Using Solid Sulfonated Carbon Catalyst

Table 4

Elemental analysis of the catalyst and bamboo carbon.

Sample	N (%)	C (%)	H (%)	S (%)
BC-0	0.15	76.34	3.16	—
BC-SO3H−1	0.25	60.32	2.53	1.87
BC-SO3H−2	0.28	61.21	2.23	1.63
BC-SO3H−3	0.32	63.42	2.61	1.52