过氧化二异丙苯催化分解反应工艺及动力学研究  

Study of catalytic decomposition reaction process and dynamics of dicumyl peroxide

作　　者：于继侗 王博[1] 张傑[1] 

机构地区：[1]北京化工大学化学工程学院,北京100029

出　　处：《工业催化》2017年第1期74-82,共9页Industrial Catalysis

基　　金：国家自然科学基金(21206008)资助项目

摘　　要：针对在苯酚/丙酮生产工艺中二级分解反应过氧化二异丙苯转化率与α-甲基苯乙烯收率较低、α-甲基苯乙烯二聚体和枯基苯酚含量偏高的问题,利用高效液相色谱对反应物料进行分析,并研究过氧化二异丙苯的分解反应。通过单因素实验和正交实验方法,考察反应温度、丙酮加入量、反应时间和浓硫酸与反应原液配比等因素对过氧化二异丙苯分解反应的影响。结果表明,在反应温度50℃、丙酮加入量22.5 g、浓硫酸与反应原液质量比1∶333和反应时间80 min条件下,α-甲基苯乙烯收率最高,可达81.15%,并根据实验数据,建立了过氧化二异丙苯分解的动力学方程。In order to solve the problems of low conversion of dicumyl peroxide （ DCP）, low yield of α-methylstyrene （AMS）, and high contents of α-methyl styrene dimer and p-cumylphenol in the second- stage decomposition process of phenol/acetone production,the reaction materials were analyzed by HPLC analysis and the decomposition reaction of dicumyl peroxide was studied. The effects of reaction tempera- tures, reaction time, acetone amounts and mass ratios of sulfuric acid to reaction solution on DCP conver- sion and AMS yield were investigated by the single factor and orthogonal experiments. The experimental results demonstrated that AMS yield reached 81.15% under the optimal condition as follows：reaction temperature 50 ℃ ,acetone amount 22.5 g, sulfuric acid/reaction solution mass ratio 1：333 and reaction time 80 min. Furthermore, the dynamics equation of the catalytic decomposition of DCP was established according to the experiment data.

关 键 词：有机化学工程 苯酚 二级分解 过氧化二异丙苯 二甲基苄醇 Α-甲基苯乙烯 

分 类 号：O643.12[理学—物理化学] TQ243.12[理学—化学]