LaZSM-5分子筛的表征及其催化酯化活性的研究  

Characterization and study on esterification activity of LaZSM-5 zeolite

作　　者：许雪棠[1] 李斌[1] 李景林[1] 韦承谦[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2000年第4期276-278,共3页Journal of Guangxi University（Natural Science Edition）

摘　　要：用 XRD,IR,NH3 -TPD和比表面测定等技术研究了 La ZSM-5分子筛上 La的体相状态和酸性 ;并将La ZSM-5分子筛用于催化松香甘油酯化反应 .结果表明 ,通过浸渍法使得 La3 + 进入了 ZSM-5分子筛骨架中 ,而 La3 + 的引入使分子筛的总酸量降低 ,L酸中心量增多 ,对液相酯化反应有较高的催化活性 .The state of La on ZSM 5 zeolite and acidity of zeolite were studied by XRD,IR,NH 3 TPD and BET methods. The LaZSM 5 zeolite had been used to catalyze the esterification of rosin and glycerol. The result showed that dipping method could make La enter the framework of the ZSM 5 zeolite, and the entrance decreased the total number of acid sites and increased the number of Lewis acid sites. The LaZSM 5 zeolite has very high catalytic activity to the esterification in liquid phase.

关 键 词：LAZSM-5分子筛 表征 催化酯化 松香甘油酯 

分 类 号：TQ424.25[化学工程] TQ225.24