The degradation kinetics of Galacturonic Acid (GalA) in subcritical water (SubW) was studied in a batch reactor. GalA degradation was faster than other monosaccharides and could be described by the first order kinetic model. The initial concentration of GalA did not affect the degradation kinetics, but the heating rate and the reaction temperature played an important role in the degradation of GalA. The energy of activation was calculated according to the Arrhenius equation and resulted to be 97 ± 3 kJ/mol. Degradation products formation, mainly formic acid and furfural, was faster with temperature until a maximum concentration was reached (0.2 g C in formic acid/g C in initial GalA at 155°C and 45 min, severity factor 3.2), followed by a fast degradation whereas a plateau concentration was reached in the case of furfural (around 0.16 g C /g C in initial GalA at 185 °C after 45 min).

在间歇式反应器中研究了半乳糖醛酸 (GalA) 在亚临界水 (SubW) 中的降解动力学。GalA 的降解速度比其他单糖更快，并且可以用一级动力学模型来描述。GalA的初始浓度不影响降解动力学，但加热速率和反应温度对GalA的降解起着重要作用。根据阿伦尼乌斯方程计算活化能为 97 ± 3 kJ/mol。降解产物（主要是甲酸和糠醛）的形成随着温度的升高而加快，直至达到最大浓度（在 155°C 和 45 分钟下，甲酸中为 0.2 g C/初始 GalA 中的 g C，严重性因子为 3.2），然后快速降解而糠醛则达到了稳定浓度（初始 GalA 在 185 °C 下 45 分钟后约为 0.16 g C /g C）。