Modification of Silica Rice Husk Ash to Solid Ammonium Sulphate for Second Generation Biofuels Productions

Table 2

The effect of different parameters on the hydrolysis of cellulose with RHNH₃SO₄H.

Parameters	Variants	Glucose yield (mM %)
		at 6 h	at 13 h
Variation of cellulose hydrolysis from different sources	Pure cellulose	98	10
	Cellulose from paper	94	11
	Cellulose from rice husk	93	18
Variation of metal chloride	LiCl	98	10
	NaCl	91	9
	KCl	90	13
Variation of solvent effects in LiCl	DMF	98	11
	Cyclohexanol	98	10
	Cyclopentanone	91	15
	1-Butanol	89	18
Reusability of catalyst with 150 mg	Fresh catalyst	98	10
	1st reuse	93	11
	2nd reuse	93	13

The reaction was run over 13 hours at 120°C of hydrolysis temperature and 150 mg of catalyst mass.