双戊烯合成对伞花烃的工艺研究

吴志平　杨国恩　

摘　要：通过气相催化反应，使双戊烯合成对异丙基甲苯即对伞花烃，选择了适宜的催化剂，探讨了反应温度、催化剂活性组分浓度等因素对产物中对伞花烃含量的影响，并对催化剂的重复使用性能进行了考察，得出了适宜的工艺条件，在此条件下，产物中对伞花烃的含量为79.6%，通过精馏可得到高纯度（97.8%）的对伞花烃.
关键词：双戊烯；对异丙基甲苯；对伞花烃；气相催化
分类号：TQ351;TQ413.24　文献标识码：A
文章编号：1000-2502(2001)01-0048-03

Study of the Synthetic Technology of P-cymene from Dipentene

WU Zhi-ping（College of Industry of Central South Forestry University, Zhuzhou 412006, Hunan ,China）　
YANG Guo-en（College of Industry of Central South Forestry University, Zhuzhou 412006, Hunan ,China）　

Abstract：P-cymene is synthesized from dipentene through vapor catalysis. The suitable catalyst is found, the main factor influe ncing the content of p-cymene i n the product is investigated, the repeating usability of the catalyst is also t ested, and the optimum condition is acquired. Under this condition, the content of p -cymene in the product is 79.6% and a high purity(97.8%) of p-cymene can be ob tained through distillation.
Keywords：dipentene; p-isopropylmethylbenzene; p-cymene; vapor catalysis