FCC汽油降烯烃助剂的研究  

Study on additives for reducing olefins in the FCC gasoline

作　　者：王小丰[1] 王昕[1] 施力[1] 

机构地区：[1]华东理工大学石油加工研究所,上海200237

出　　处：《燃料化学学报》2006年第1期120-122,共3页Journal of Fuel Chemistry and Technology

摘　　要：The additives for reducing the olefins in the fluid catalytic cracking（FCC） gasoline were prepared by peptization.The effect of additives for reducing the olefins in the gasoline was evaluated in the micro reactor.The additive with the molar ratio of Mg and Al（n/n）,1∶1,had the best olefins reducing reaction activity.XRD result showed that MgAl2O4·MgO spinel was formed in the additive.Studied by Infrared Ray,it was found that the amount of total L acid decreased by adding the content of rare earth.Meanwhile the amounts of weak L acid and the total weak acid increased.Thereby,the hydrogen migration activity of FCC catalyst increased.When the content of the rare earth was 20%,the olefins reducing activity was 45.45%.Studied by XRD,it was thought that the effect of reducing the olefins of the FCC gasoline was the result of the cooperative efforts of MgAl2O4 and ReO2.The additives for reducing the olefins in the fluid catalytic cracking （FCC） gasoline were prepared by peptization. The effect of additives for reducing the olefins in the gasoline was evaluated in the micro reactor. The additive with the molar ratio of Mg and Al （ n/n ）, 1 ： 1, had the best olefins reducing reaction activity. XRD result showed that MgAl2O4 · MgO spinel was formed in the additive. Studied by Infrared Ray, it was found that the amount of total L acid decreased by adding the content of rare earth. Meanwhile the amounts of weak L acid and the total weak acid increased. Thereby, the hydrogen migration activity of FCC catalyst increased. When the content of the rare earth was 20%, the olefins reducing activity was 45.45%. Studied by XRD, it was thought that the effect of reducing the olefins of the FCC gasoline was the result of the cooperative efforts of MgAl2O4 and ReO2.

关 键 词：FCC 汽油 助剂 降烯烃 稀土 氢转移 

分 类 号：TE624.94[石油与天然气工程—油气加工工程]