CAJ | 학술논문

研究了温度在443.15～483.15K时0.1mol/L氯化铁催化木糖降解生成糠醛的反应动力学过程。首先建立并验证了反应的动力学模型，根据模型得到了木糖降解、糠醛降解和缩合反应的速率常数。由阿伦尼乌斯方程拟合得到其表观活化能分别为107.94kJ/mol、65.86 kJ/mol和26.36kJ/mol。结果表明，高温和较短反应时间有利于糠醛收率的提高，在反应温度483.15K、60min条件下，最大糠醛收率可达78%。
연구료온도재443.15～483.15K시0.1mol/L록화철최화목당강해생성강철적반응동역학과정。수선건립병험증료반응적동역학모형，근거모형득도료목당강해、강철강해화축합반응적속솔상수。유아륜니오사방정의합득도기표관활화능분별위107.94kJ/mol、65.86 kJ/mol화26.36kJ/mol。결과표명，고온화교단반응시간유리우강철수솔적제고，재반응온도483.15K、60min조건하，최대강철수솔가체78%。
The dehydration kinetics from xylose to furfural with 0.1mol/L ferric chloride as catalyst was studied at temperature range from 443.15K to 483.15K. The kinetic model was established and tested,then the reaction rate constants of xylose dehydration,furfural degradation and condensation were obtained according to assumed kinetic model. The evaluated activation energies of these reactions were quantified via Arrhenius plots,and the values were 107.94kJ/mol,65.86kJ/mol and 26.36kJ/mol, respectively. The experimental results showed that high temperature and short time were beneficial to improve the furfural yield,and the maximum furfural yield of 78% was obtained at 483.15K and 60min.