摘要
以环己酮、过氧化氢为原料,1,2-二氯乙烷为溶剂,锡氯化物的水解产物为催化剂,考察了过氧化氢与环己酮的物质的量之比、催化剂用量、反应时间、反应温度、超声波频率和强度对ε-己内酯的收率的影响。结果表明,当二氯乙烷50 mL,环己酮0.1 mol,过氧化氢与环己酮物质的量之比为4,催化剂为环己酮质量分数的5.1%,反应温度70℃,在超声频率20 kHz,声强445 W/m^2的条件下反应2 h,ε-己内酯的收率为69.0%。
The effects of molar ratio of hydrogen peroxide to cyclohexanone, catalyst dosage, reaction time, reaction temperature and the frequency and intensity of ultrasonic irradiation on the yield of ε-caprolactone were investigated using hydrogen peroxide as oxidant , 1,2-dichloroethane as solvent and the hydrolyzate of tin chloride as catalyst. The results showed that the yield of ε-caprolactone reached 69.0% under the conditions of solvent 1,2-dichloroethane 50 mL, cyclohexanone 0. 1 mol, molar ratio of hydrogen peroxide to cyclohexanone 4, mass ratio of catalyst to cyclohexanone 5.1%, ultrasonic frequency of 20 kHz, ultrasonic intensity of 445 W/m^2, temperature 70 ℃ and reaction time of 2 h.
出处
《化学反应工程与工艺》
CAS
CSCD
北大核心
2010年第4期366-370,共5页
Chemical Reaction Engineering and Technology
