以共沉淀法合成的La₂O₃-CuO-MgO三元复合固体碱为催化剂，用于异丙苯（IPB）氧化工艺中。由于氧化过程受过氧化氢异丙苯（CHP）分解的影响，IPB转化率与CHP选择性呈折衷关系。在单因素实验研究的基础上对IPB氧化合成CHP的工艺进行正交优化，考察了各因素对IPB转化率及CHP选择性及收率的影响。结果表明，在反应时间为8.5 h、反应温度为100℃、V_O2为500 mL/min及催化剂质量分数为2.0%的优化条件下，IPB的转化率为95.50%，CHP的选择性与收率分别为60.57%、57.84%。

La₂O₃-CuO-MgO ternary composite solid base synthesized via co-precipitation method is used as a catalyst in the process of cumene (IPB) oxidation. Since the oxidation process is affected by the decomposition of cumene hydrogen peroxide (CHP), the conversion rate has a compromise relationship with CHP selectivity. On the basis of single factor experiments, the IPB oxidation to CHP process is optimized by orthogonal method. The effects of various factors on the conversion rate of IPB, and the selectivity and yield of CHP are investigated. It is shown that the conversion of IPB can reach 95.50%, and the selectivity and yield of CHP can reach 60.57% and 57.84%, respectively under the optimized conditions as follows:reaction lasts for 8.5 h, reaction temperature remains at 100℃, volumetric flow of oxygen is 500 ml·min^-1 and catalyst dosage is 2.0%.

刘寒霜(1994-),女,硕士研究生,研究方向为反应催化,2426821749@qq.com