Glucose decomposition kinetics in water at 25 MPa in the temperature range of 448-673 K
Glucose decomposition kinetics in water at 25 MPa in the temperature range of 448-673 K
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DOI：
10.1021/ie050830r
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发表时间：
2006-02
影响因子：
4.2
通讯作者：
Y. Matsumura
中科院分区：
文献类型：
--
作者：
Y. Matsumura
使用连续反应器在 25 MPa 的超临界压力和 448 至 673 K 的温度范围内研究了葡萄糖分解动力学。通常假设反应为一阶以确定反应速率系数，但在本研究中，反应级数也是根据实验数据确定的，并且在高温下观察到反应级数小于1。考虑到随着温度从 448 K 升高到 673 K，反应场从离子场变为自由基场，这意味着反应机理发生了变化。
Glucose decomposition kinetics was studied under supercritical pressure of 25 MPa in the temperature ranging from 448 to 673 K using a continuous reactor. It is usual that the reaction is assumed to be of the first order to determine the reaction rate coefficient, but in this study, reaction order was also determined from the experimental data, and reaction order less than unity was observed at a high temperature. Considering that reaction field changes from ionic to radicalic as temperature increases from 448 to 673 K, change in reaction mechanism is implied.