CuO-MgO负载镧基催化剂的制备及其对异丙苯催化氧化性能的研究  

Preparation of CuO-MgO supported lanthanum-based catalyst and its catalytic oxidation performance for cumene

作　　者：刘寒霜 顾正桂[1,2] 曹晓艳[1] 汪凯军 LIU Han-shuang;GU Zheng-gui;CAO Xiao-yan;WANG Kai-jun(Jiangsu Provincial Key Laboratory of Material Circulation and Pollution Control,Nanjing Normal University,Nanjing 210046,China;Jiangsu Development&Research Institute of Chemical Resources Along Yangtze River,Nanjing 210097,China)

机构地区：[1]南京师范大学,江苏省物质循环与污染控制重点实验室,江苏南京210046 [2]江苏沿江化工资源开发研究院,江苏南京210097

出　　处：《现代化工》2021年第8期165-172,共8页Modern Chemical Industry

基　　金：江苏省南京师范大学校企合作项目(S11090B41904)。

摘　　要：以共沉淀法合成的La_(2)O_(3)-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℃、VO_(2)为500 m L/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%。La_(2)O_(3)-Cu O-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%.

关 键 词：异丙苯 过氧化氢异丙苯 催化 氧化 固体碱催化剂 

分 类 号：TQ032.4[化学工程]