硅烷化改性ZSM-5分子筛用于催化脱蜡催化剂  

Silanizing-modified zeolite catalyst ZSM-5 for catalytic dewaxing

作　　者：刘丽芝[1,2] 郭洪臣[1] 

机构地区：[1]大连理工大学化工学院,辽宁大连116012 [2]北京三聚环保新材料股份有限公司,北京100080

出　　处：《石化技术与应用》2009年第3期242-245,共4页Petrochemical Technology & Application

摘　　要：利用分子模拟技术,筛选分子大小合适的硅烷化合物A对ZSM-5分子筛进行表面修饰,并对改性分子筛性质进行了表征。结果表明,在改性温度50℃,硅烷化合物A质量分数为5%的条件下,可制备选择性良好的改性ZSM-5分子筛。将其用于制备新型催化脱蜡催化剂,在压力为6.5 MPa,氢气/原料油(体积比)为500,空速为1.0 h-1的条件下,与未改性者相比,前者柴油收率提高了2.7个百分点,凝点降低了2℃。改性后的分子筛对正己烷的吸附选择性增加,对环己烷的吸附含量减小。ZSM -5 zeolite was modified by the silane compound A using a molecule simulation technique. The property of modified zeolite ZSM -5 was characterized. The results showed that the modified zeolite with better selectivity was prepared at temperature 50 ℃ ,the mass fraction of silane compound A 5%. The modified zeolite has good selectivity. Then the catalyst for catalytic dewaxing was made from the modified zeolite. Under the condition of pressure 6.5 MPa, hydrogen/oil （ volume ratio） 500,space velocity 1.0 h^-1, the yield of low solidification diesel oil increased by 2.7 percentiles compared with the unmodified one, and the solidification point lowed by 2℃. The adsorption selectivity of the modified zeolite increased, while adsorbing ability for cy- clohexane reduced.

关 键 词：催化脱蜡 催化剂 分子模拟软件 分子筛 硅烷化改性 选择性 

分 类 号：TE624.95[石油与天然气工程—油气加工工程]