NaY/β复合分子筛改性及对模拟柴油中氮化物的吸附性能  

MODIFICATION OF NaY/β COMPOSITE MOLECULAR SIEVE AND ITS ADSORPTION PERFORMANCE OF REMOVING NITROGEN CONTAINING COMPOUNDS IN MODEL OIL

作　　者：王福帅[1,2] 李会鹏[1] 赵华[1] 房斌斌[1] 

机构地区：[1]辽宁石油化工大学,辽宁抚顺113001 [2]陕西华电榆横煤化工有限公司

出　　处：《石油炼制与化工》2012年第11期59-62,共4页Petroleum Processing and Petrochemicals

基　　金：辽宁省博士启动基金资助项目(20081104)

摘　　要：利用二次交换二次焙烧方法对NaY/β分子筛进行改性,制备CeY/β和BaY/β复合分子筛。采用XRD、ICP-MS表征方法对改性前后的分子筛结构进行分析;采用氮含量600μg/g的模拟柴油,考察改性前后分子筛的吸附脱氮效果,并优化吸附脱氮条件。结果表明:改性前后分子筛的特征峰基本一致,说明改性没有改变分子筛的主体晶型;改性后分子筛的脱氮率明显增加,CeY/β分子筛的脱氮效果最佳;CeY/β分子筛的适宜吸附条件为:剂油质量比1∶20,反应温度40℃,吸附时间3.0h;BaY/β分子筛的适宜吸附条件为:剂油质量比1∶40,反应温度40℃,吸附时间4.0h。Using the method of ion-exchange followed calcination twice to prepare CeY/β and BaY/β com posite molecular sieve samples from sodium type Y-β composite molecular sieve, the composite samples prior and post to modification were characterized by XRD and ICP-MS. The adsorption denitrogenation effects of these samples were investigated using model diesel with nitrogen content of 600 μg/g, and the process conditions were optimized. Test results show that the structure of molecular sieve samples prior and post to modification were basically unchanged, yet the nitrogen removal rates of the modified samples increased significantly and CeY/βsample showed the best. The optimum adsorption conditions of denitrogenation were obtained as follows： for CeY/β sample, an adsorbent/oil mass ratio of 1 ： 20, a reaction temperature of 40 ℃ and an adsorption time of 3 h; for BaY/β sample, an adsorbent/oil mass ratio of 1 ： 40, a reaction temperature of 40 ℃ and an adsorption time of 4 h.

关 键 词：Y β复合分子筛柴油吸附脱氮 

分 类 号：TE621[石油与天然气工程—油气加工工程]