摘要
针对异丁烯齐聚反应产物同分异构体多且不易分离的问题,采用多种分析手段对异丁烯齐聚反应进行研究.根据异丁烯聚合机理推断出可能的产物结构,采用量子化学方法对不同产物生成的可能性大小进行比较.以阳离子树脂Amberlyst-35为催化剂在固定床反应器中对异丁烯齐聚反应进行研究,温度和压力分别控制在80℃和1.5MPa.实验结果表明,异丁烯齐聚反应产物主要是异丁烯二聚体和三聚体的同分异构体.采用核磁共振(NMR)和气质联用方法(GC-MS)对齐聚反应产物进行分析,发现异丁烯二聚体主要由5种异构体组成,三聚体主要由7种异构体组成.
The mechanism of isobutene oligomerization was analyzed aiming at the problem that the prod- ucts of isobutene oligomerization have many isomers which are very difficult to separate. Structures of iso- mers of diisobutene and triisobutene were deduced from the reaction mechanism. The quantum chemistry method was used to predict the possibility of different isomers. Isobutene oligomerization took place in batch reactor at 80 ℃ and 1.5 MPa in the presence of catalyst Amberlyst-35. All products were analyzed by GC-MS and NMR method to confirm the results of the above theoretical analysis. Results show that there are five isomers in diisobutene and seven in triisobutene.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2013年第1期188-192,共5页
Journal of Zhejiang University：Engineering Science
关键词
异丁烯
齐聚
异构体
量子化学
isobutene； oligomerization； isomer； quantum chemistry
