Y/β(Na)复合分子筛改性及吸附脱硫性能  

Modifiability of Y/β(Na)micro-microporous composite molecular sieve and desulfurization performance

作　　者：宋芊慧[1] 蔡天凤[1] 李会鹏[1] 赵华[1] 

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001

出　　处：《化学工程师》2012年第10期8-10,共3页Chemical Engineer

基　　金：辽宁省博士启动基金资助项目(20081104)

摘　　要：采用二次交换二次焙烧的方法对Y/β(Na)复合分子筛改性,得到Y/β(Ce)和Y/β(Ca)复合分子筛,对改性前后的分子筛结构进行XRD和ICP-MS表征,并考察其脱硫性能。结果表明:经液相离子交换后,Ce3+和Ca2+分别取代Na+进入到分子筛孔道中,且以高度分散的形态存在吸附剂上。改性后分子筛的脱硫吸附效果大大增强,在相同的条件下,Y/β(Ce)分子筛脱硫效果最佳。Y/β （Na） was iirstly modified using two ion-exchanged and two ca!cinatlons method to prepare Y/β （Ce）and T/β （Ca） composite molecular sieve, which were characterized by means of XRD and ICP-MS. Static adsorption experiments were carried out to study the adsorption of organic sulfur compounds. The results showed cerium ions and calcium ions had entered into the zeolite pores in stead of the sodium ions, and highly dispersed on the adsorbent. The desulfurization adsorption effect of the modified molecular sieve was enhanced greatly; and Y-β（Ce） molecular sieve exhibited the highest desulfurization rate.

关 键 词：Y/β复合分子筛 改性 吸附 脱硫 

分 类 号：TE626.2[石油与天然气工程—油气加工工程] TQ424.25[化学工程]