【摘要】 研究了压力10 MPa、温度180~120℃下木糖在高温液态水中的无催化分解反应动力学。实验结果表明,在无任何催化剂条件下,木糖能顺利进行分解反应。在实验范围内,木糖分解反应的活化能为123.27 kJ/mol。另外,对不同温度下反应时间对木糖分解的主要产物糠醛收率的影响进行了考察。通过控制反应条件可以有选择性地调节产物分布。更多还原

【Abstract】 The kinetics of non-catalyzed decomposition of xylose in high temperature liquid water was studied for temperature from 453.15 K to 493.15 K and under pressure of 10 MPa.The main products of xylose decomposition were furfural and formic acid.The evaluated activation energy of xylose decomposition was 123.27 kJ /mol.In addition,the effects of temperature and reaction time on the yield of furfural were shown.Selective decomposition of xylose in high temperature liquid water was possible by controlling reaction conditions.更多还原