摘要
在常压下，用回流吸附方法制备了活性炭固载对甲苯磺酸（ＴｓｏＨ／Ｃ）催化剂，采用反滴定法测定固载量。通过正文实验，找到催化剂最佳固载量为（４８±０．５）％，最佳活化温度为１２０℃。首次提出用固载量为（４８±０．５）％的ＴｓＯＨ／Ｃ催化摩尔比为１．５：１的乙酸与乙醇的酯化反应，在液相温度达到（１０８±２）℃时，可以９２％的收率连续制备出乙酸乙酯。其折光率及红外光谱与文献值一致。该酯化工艺及非固载型对甲苯磺酸工艺相比，具有催化剂用量少，使用寿命长，酯收卒高，反应后处理工序简单，不污染环境，不腐蚀设备，酯化反应既可间歇操作又可连续操作等优点．
Activated charcoal carried p-methyl benzenesulfonic acid(TsOH/C)’which adsorp-tive quantity(Q)can be measured over anti-titrarion,was prepared by refluxing adsorp-tion at normal pressure. the optimum adsorptive quantity(Q=(48±0. 5)%)and acti-vated temperature(T=(120±2)℃)of the TsoH/c were found by perpendicular experi-ment.TsOH/C catalyzing esterification between 1. 5 mole acetate and 1. 0 mole ethanolwas reported for the first time with 92%yield of ethyl acetate asQ=(48±0.5)%andreaction timperature being( 108±2)℃ As stated above the catalyzing esterificationtechnology of the TsOH/C can take the place of completely that of H2SO4 or TsOH be-cause of having advantages as follows:high yield of ester , low loss of catalyst,long ser-vice life of catalyst, no three waste polluting and no corroding equipment in industry etc.
出处
《郑州轻工业学院学报》
1994年第4期17-20,共4页
Journal of Zhengzhou Institute of Light Industry（Natural Science）
关键词
活性炭
对甲苯磺酸
载体
催化
酯化
乙酸乙酯
activated carbon
P-methyl benzenesulfonic acid
carriers
catalysis
esterification
ethyl acetate
