Mo修饰对微波法合成β沸石催化剂性能的影响  

Effects of Mo Modification on Performance of Zeolite Beta Catalyst by Microwave Radiation Synthesizing

作　　者：马骏[1] 臧树德 王海彦[1] 王洪生 

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001 [2]中国石油抚顺石化分公司石油三厂,辽宁抚顺113001

出　　处：《辽宁石油化工大学学报》2006年第3期23-26,30,共5页Journal of Liaoning Petrochemical University

摘　　要：采用微波辐射方法制备β沸石,再以Mo进行修饰。用X射线衍射、透射电镜和氨吸附程序升温脱附等方法表征β沸石修饰前后酸性和结构特征,研究了凝胶组成和辐射条件对合成β沸石相对结晶度的影响。在固定床反应器上对Mo修饰前后β沸石醚化性能进行了评价。实验结果表明,采用微波辐射方法合成的β沸石结晶度达100%。最佳合成条件为:H2O和SiO2的摩尔比为2.5,pH大于10,辐射温度为140℃,辐射时间为60 min。Mo修饰后β沸石基本保持了原有的形貌特征,且酸强度增加,醚化反应活性提高2.7%。β zeolite was synthesized by microwave radiation, and then modified by Mo. The,acidity and structure characters of β - zeolites were characterized by XRD, TEM and NH3 - TPD before and after modifying. The effects of the sol compsition and the radiation condition on the relative crystallinity of β- zeolite were studied. The etherification activity of β- zeolite was evaluated in a fix- bed reactor. The results show that the relative crystallinity of β zeolite under microwave radiation is 100%. The optimum synthesis conditions are as follows： the mole ratio of H2O to SiO2 is 2.5 , pH is more than 10 , radiation temperature is 140 ℃ and radiation time is 60 min. Mo modified β - zeolite keeps the original structural characters of β - zeolite, and strength of acid is increased, the activity of etherification increases 2.7 %.

关 键 词：Β沸石 合成 微波辐射 钼 醚化 

分 类 号：O643.1[理学—物理化学]