以麦秸为研究对象,解聚剂为HCl、HNO3和H3PO4,对解聚产物进行定性和定量分析,并利用动力学模型描述木糖及糠醛的产生过程.结果表明,解聚液中的产物有葡萄糖、木糖、阿拉伯糖、纤维二糖、乙酸、糠醛、5-羟甲基糠醛.通过引入变量(α,木糖/木聚糖的比值)利用Saeman动力学模型获得了不同温度下,木聚糖的水解速率常数、木糖的转化速率常数以及糠醛的生成速率常数.HCl、HNO3和H3PO4解聚麦秸,木糖的生成活化能分别为55.5、46.3和59.8 kJ/mol.结合反应温度、反应时间、反应速率以及木糖和糠醛的浓度,确定最佳解聚条件为:硝酸作解聚剂,在130℃下水解95 min.
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