化学工程2012，Vol.40Issue(6)：64-67,4.
甲缩醛催化精馏过程宏观动力学研究
Macrokinetics of methylal synthesis by catalytic distillation
摘要
Abstract
Methylal was synthesized from methanol and dilute formaldehyde in a batch reactor in the presence of strong acidic cation exchange resin catalyst. The purities of methylal, methanol and formaldehyde were determined by calibration area normalization and sodium sulfite titration. The effects of catalyst quantity and reaction temperature on the reaction rate were investigated and the reaction equilibrium constant was determined. The rates of positive reaction and reverse reaction at 313, 318, 323, 328 K were investigated by using pseudo-homogeneous model. The results show that the optimal mass fraction of catalyst A is 3% of the total solution; the curve fitted by pseudo-homogeneous model is significantly linear, and the supposed mechanism is proved; the pre-exponential factor, activation energy and macro kinetic equations are obtained at 313-328 K, and the reaction is second-order reaction. The calculation data are in good agreement with the experimental data, which shows that the macro kinetic equations are reasonable and are suitable for simulation calculation.关键词
甲缩醛/动力学/甲醇/稀甲醛/强酸型阳离子交换树脂催化剂Key words
methylal/ kinetics/ methanol/ dilute formaldehyde/ strong acidic cation exchange resin catalyst分类
化学化工引用本文复制引用
李柏春,巢飞,徐敬瑞..甲缩醛催化精馏过程宏观动力学研究[J].化学工程,2012,40(6):64-67,4.
