1,2-环己二醇合成己二酸的氧化动力学

以H_2O_2为氧化剂,磷酸为助剂,采用初始浓度法研究了钨酸催化过氧化氢氧化1,2-环己二醇合成己二酸的氧化动力学,建立动力学模型,得到了反应动力学方程。实验结果表明,1,2-环己二醇的反应级数为0.98,H_2O_2的反应级数为0.30,反应的活化能为46.92 k J/mol,指前因子为9.48×10~4 L~(0.28)/(mol~(0.28)·min)。通过实验验证氧化动力学方程,计算值和实验值的平均相对误差为0.2%,两者基本吻合。

Oxidation Kinetics of Synthesis of Adipic Acid from 1,2-Cyclohexanediol

The oxidation kinetics of synthesis of adipic acid from 1,2-cyclohexanediol (1,2-Col) was studied using tungstate as catalyst, phosphoric acid as additives, hydrogen peroxide as oxidant. The kinetic model was established and the reaction kinetic equation was obtained. The results showed that the oxidation reaction order was 0.98 to 1,2-cyclohexanediol and 0.3 to H2O2. The activation energy was 46.92 kJ/mol and pre-exponential factor of the reaction was about 9.48×104 L0.28/(mol0.28·min). The oxidation kinetic model was verified, in which the average relative error between the calculated and experimental values was 0.2%, which indicated that the calculated values were in good agreement with the experimental results.