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

Figure 6

The hydrolysis of cellulose over RHNH₃SO₄H and (NH₄)₂SO₄ catalysts as a function of hydrolysis time. The hydrolysis conditions were the catalyst mass 150 mg of RHNH₃SO₄H, 4.6 mmol of (NH₄)₂SO₄ [18], at 120°C.