摘要
异丙苯法合成苯酚的关键步骤是异丙苯氧化生成过氧化氢异丙苯,目前该过程通常在釜式或鼓泡反应器中进行,不仅需要高温高压的严苛条件,而且还存在转化率低、生产周期较长等缺点。利用紫外光诱导异丙苯氧化,并结合微流控技术对异丙苯光化学进行研究。在合成过程中,选择二苯甲酮为光敏剂,在波长365 nm,液体流量为10μL/min,氧气流量为80μL/min,CHP体积分数为5%,二苯甲酮浓度为0.2 mol/L,停留时间60 min的最优反应条件下,反应转化率为21.3%,选择性为27%。研究工作为利用光化学实现异丙苯氧化提供了新的思路与方向。
The key step in the synthesis of phenol from cumene is the production of cumene hydroperoxide through oxidation of cumene.At present,the process is usually carried out in tank or bubble reactor,which not only needs the harsh conditions of high temperature and high pressure,but also has the disadvantages of low conversion and long production cycle.In this paper,the photochemical process of cumene peroxidation induced by UV with microfluidic technology was studied.Benzophenone is selected as photosensitizer.The 365 nm of wavelength is obtained.The liquid and oxygen flow rate are 10μL/min and 80μL/min respectively.Under the optimal reaction conditions of 5%CHP,0.2 mol/L of benzophenone within 60 min of residence time,the conversion was 21.3%and the selectivity was 27%.The research work provides a new idea and direction for the photochemical oxidation of cumene.
作者
付鹏兵
李函容
杜乐
朱吉钦
FU Pengbing;LI Hanrong;DU Le;ZHU Jiqin(Shanxi Lu'an Chemical Group Co.,Ltd.,Changzhi Shanxi 046200,China;College of Chemical Engineering,Beijing University of Chemical Technology,Beijing 100029,China)
出处
《山西化工》
2021年第4期1-4,18,共5页
Shanxi Chemical Industry
基金
国家自然科学基金面上项目(21978008,21975016)。
