摘要
为克服现有对叔丁氧基甲苯合成方法的缺点,以对甲苯酚和异丁烯为原料,在相转移剂和硫酸水溶液催化剂存在下,研究了反应温度、催化剂用量等合成工艺条件对对叔丁氧基甲苯收率的影响。结果表明,在m(对甲苯酚)/m(硫酸)/m(四丁基溴化铵)为100.0∶3.0∶0.9,n(异丁烯)/n(对甲苯酚)为1.6,反应温度为20℃,反应时间为5 h的优选合成工艺条件下,对叔丁氧基甲苯收率大于78%。
In order to overcome the shortcomings of the existing synthesis method of p -tert - butoxy- methylbenzene, the effects of synthetic process conditions, such as reaction temperature, cat- alyst level, on the yield of p -tert -butoxy -methyl- benzene were investigated with p - cresol and isobutene as raw materials in the presence of phase transfer agent and sulfuric acid solution catalyst. The results showed that under the optimized conditions of reaction time 5 h, m （p - cresol）/m （ sulfuric acid） / m （tetrabutylammonium bromide） 100.0 ： 3.0 ： 0. 9, n （isobutene）/rt （ p - cresol ） 1.6, reaction temper- ature 20℃ , the yield of p - tert - butoxy - methyl- benzene was over 78%.
出处
《石化技术与应用》
CAS
2015年第1期22-25,共4页
Petrochemical Technology & Application
