室温离子液体对催化裂化汽油的降烯烃性能研究  

Performance of reducing olefin of FCC gasoline in lab ionic liquid systems

作　　者：叶天旭[1] 张在龙[1] 杨衡 张予辉[1] 刘金河[1] 

机构地区：[1]中国石油大学化学化工学院,山东东营257061 [2]中国石油锦西石化分公司,辽宁葫芦岛125001

出　　处：《中国石油大学学报（自然科学版）》2006年第4期104-106,共3页Journal of China University of Petroleum(Edition of Natural Science)

摘　　要：研究了[BmIm]Cl-AlCl3室温离子液体对催化裂化汽油的降烯烃性能。结果表明,在温度为40℃,反应时间为20 min和剂油比为1∶5的条件下,催化裂化汽油烯烃含量下降14.70%,辛烷值基本不变,离子液体可重复使用。离子液体的超强酸性能对汽油中的低碳烯烃与异构烷烃的烷基化、与芳烃的Fridel-Crafts烷基化以及烯烃自身的二聚反应起到催化作用,从而达到降烯烃的目的。The olefin content of FCC gasoline can be obviously reduced in [ BmIm] Cl-AlCl3 ionic liquid system. The performance of reducing olefin was studied. The results show that the olefin content decreases by 14.70 % under the condition with the temperature of 40 ℃, the time of 20 minutes, and the ratio of agent to FCC gasoline is 1 ： 5. At the same time the octane number of gasoline does not change. The ionic liquid could be reused. The mechanism of reducing olefin can be explained as the superacid catalytic activity of ionic liquid in the alkylation, Fridel-Crafts reaction and dimerization reaction systems.

关 键 词：催化裂化 汽油 烯烃 离子液体 催化剂 

分 类 号：TE624.41[石油与天然气工程—油气加工工程]