摘要
使用超声波促进邻氯苄叉二氯的水解,研究各反应条件对反应速度的影响。实验结果表明超声水解反应速率大大高于普通反应速度,24min内声化学反应完成了97.7%,而普通化学反应仅完成了32.6%,声化学反应比普通反应快3倍。反应的影响因素有温度、声强、催化剂质量分数、催化剂A、B摩尔比、氮气通入速度等,最佳值分别为110℃、4.03W/cm2、4%、2∶1、60mL/min。影响因子以温度为最大,声强、催化剂质量分数、氮气流量依次递降。
The hydrolysis of 1-chloro-2-dichloromethylbenzene (CdCMB) with ultrasound was studied, and the effects of various conditions on reaction rate and yield were investigated. The results show that the velocity of (reaction) accelerated by ultrasound is far higher than that of normal reaction. 97.7% of CdCMB in ultrasonic (reaction) is hydrolyzed in 24 minutes, but only 32.6% of the reactant is converted in the reaction without ultrasound in the same time. The hydrolysis rate of sonochemical reaction is 3 times faster than that of common chemical (reaction.) The reaction factors include temperature, ultrasound intensity, catalyst mass fraction, nitrogen flow rate and mole ratio of catalyst A and B , in which the best conditions are 110 ℃, 4.03 W/cm^2, 4%, 60 mL/min, (2∶1), respectively. With temperature being the main factor, the effects of ultrasound intensity, catalyst mass fraction and nitrogen flow rate decrease successively.
出处
《化学工程》
CAS
CSCD
北大核心
2004年第5期69-73,共5页
Chemical Engineering(China)
关键词
超声波
邻氯苄叉二氯
邻氯苯甲醛
水解
ultrasound
1-chloro-2-dichloromethylbenzene
O-chlorobenzaldehyde
hydrolysis
