The Study on Hydrolysis of Microcrystalline Cellulose in Formic Acid System

The hydrolysis kinetics of microcrystalline cellulose in formic acid system was studied.The effects of mass fraction of hydrochloric acid,dosage of MCC,temperature(55-75 ℃) and time(0-9 h) were discussed.The degradation of glucose was also studied.The result indicated that the degradation of glucose was a fast reaction and the velocities of MCC hydrolysis were 6.34×10-3 h-1 at 55 ℃,2.94×10-2 h-1 at 65 ℃,6.84×10-2 h-1 at 75 ℃.The velocities of glucose degradation were 0.01 h-1 at 55 ℃,0.14 h-1 at 65 ℃,0.34 h-1 at 75 ℃.The apparent activation energy of MCC hydrolysis was 105.61 kJ/mol and the apparent activation energy of glucose degradation was 131.370 kJ/mol.