废纸与葡萄糖的亚临界水解动力学

目前制备生物质乙醇在原材料选择方面，多以玉米秸秆、稻草秸秆、玉米、高粱等原生质或微晶纤维素作为研究对象。其中玉米，高粱作为乙醇化的原料存在与人争粮的争议，而原生植物纤维，因含有20％-30％的半纤维素，用于制取乙醇前需进行预处理，而预处理工艺增加了生产成本及工艺的复杂程度。众所周知，废纸以高速度呈逐年增长趋势，据统计2005年废纸的产生量高达7000多万吨，

Sub-critical hydrolytic dynamics of waste paper and glucose

Glucose is the intermediates starting biomass to prepare ethanol.In order to study the feasibility of hydrolytic waste paper preparing glucose process under sub-critical conditions,sub-critical hydrolytic dynamics of waste paper and glucose in the range of 300~320℃,280~310℃ were determined respectively.Hydrolytic data of hydrolysis and glucose of cellulose in waste paper were fitted by the model of even dynamics.The results show that hydrolytic rate constant is enlarged by the improvement of temperature;hydrolytic energy of activation of cellulose and glucose were 60.16kJ/mol,79.59 kJ/mol respectively.The results also show that hydrolytic energy of activation of glucose in sub-critical water is higher than activation energy of hydrolysis of cellulose in waste paper.So this was advantageous to the accumulation of glucose.But the hydrolysis rate constant of glucose is bigger than that of cellulose in waste paper.High output value of glucose can be obtained by strict control of temperature and reaction time in actual process application.