柑青醛合成新铃兰醛水合反应宏观动力学模型研究  

Study on Kinetics Model of Synthesis of Lyral from Myrac Aldehyde

作　　者：陈艳平[1] 王碧玉[1] 黄智贤[1] 吴燕翔[1] 

机构地区：[1]福州大学化学化工学院,福建福州350108

出　　处：《生物质化学工程》2010年第6期18-22,共5页Biomass Chemical Engineering

基　　金：福建省科技厅重点资助项目(2007N0043)

摘　　要：研究了以柑青醛为原料合成新铃兰醛的水合反应宏观动力学。探讨了反应条件对反应速率常数的影响,较佳工艺条件为反应温度338 K、柑青醛初始浓度0.534 6 mol/L和流化速率3.58×10-3m/s。采用拟均相反应模型对柑青醛合成新铃兰醛反应动力学数据进行拟合,得实验条件下宏观动力学模型:-rA=1.26×107CACH2Oexp(-66 670/RT)-3.68×106CBexp(-57 939/RT),正反应活化能(Ea+)为66.670 kJ/mol,逆反应活化能(Ea-)为57.939 kJ/mol。用动力学模型求得的计算值与实验值的相对误差均小于5%,验证了所建动力学模型是适当的,能较好的描述柑青醛水合反应过程。The hydration kinetics of lyral synthesis using myrac aldehyde as raw materials was studied. Reaction conditions on reaction rate constant were investigated. The optimum conditions were identified：reaction temperature 338 K, initial concentration of myrac aldehyde 0.534 6 mol/L and the flow rate 3.58 ×10^-3 m/s. Kinetic data of myrac aldehyde synthesis lyral were fitted based on homogeneous reaction model. A kinetics model was gained, - rA = 1.26×10^7CACH2oexp（ - 66 670/RT） - 3.68 ×10^6CBexp（ -57 939/RT）. Activation energy of the positive reaction is Eo＋ 66. 670 kJ/mol, and the reverse reaction is Ea 57. 939 kJ/mol. Relative deviations between the calculated values and the experimental values were all below 5 %, which showed that the kinetic model could preferably describe the hydration of lyral.

关 键 词：柑青醛 新铃兰醛 水合反应 动力学模型 

分 类 号：TQ651[化学工程—精细化工]