【摘要】 研究了锰-硫酸体系氧化对氯甲苯制对氯苯甲醛反应动力学，推导出了动力学方程式。分别从反应物的减少和产物的增加两方面考虑，在温度为323K～343K范围内对不同硫酸浓度下由对氯甲苯制对氯苯甲醛氧化反应动力学进行研究; 由实验数据回归得到了反应速率常数、表观活化能等动力学参数。实验结果表明酸度对对氯甲苯氧化反应动力学影响很大，随酸度的增加氧化反应级数和表观活化能降低；在浓度为7.0 mol·L-1、8.0 mol·L-1、9.0mol·L-1硫酸介质下, Mn³⁺氧化对氯甲苯制对氯苯甲醛的反应分别呈现为表观1级、0.3级和0级反应。更多还原

【Abstract】 The kinetic of p-chlorotoluene oxidation to p-chlorobenzaldehyde by Mn-sulfuric acid as oxidant was studied. The reaction mechanism of p-chlorotoluene oxidation by Mn³⁺ was studied from two aspects of the reduction of reactant and the generation of p-chlorobenzaldehyde, and the kinetic parameters were gotten from the experiment data. The results show that the acidity had great influence on the oxidation reaction, and that with the reducing concentration of H2SO4, the reaction order and the activation energy were reducing. At the acidity of 7.0mol(L-1, 8.0mol(L-1 and 9.0mol(L-1 H2SO4, the reaction orders are 1, 0.3, and 0 order respectively.更多还原