卤素修饰γ-Al_2O_3催化剂及其在MTBE裂解的研究  

The study of γ-Al_2O_3 modified by halogen and its application in MTBE cracking

作　　者：金玉松 王筠松[1] 王丽[1] 孙苏 郭耘[1] 郭杨龙[1] 卢冠忠[1] 

机构地区：[1]华东理工大学工业催化研究所,上海200237

出　　处：《应用化工》2017年第11期2150-2153,2157,共5页Applied Chemical Industry

基　　金：上海市科委项目(15DZ1205305)

摘　　要：研究了不同卤素修饰对γ-Al_2O_3的酸性影响以及其对甲基叔丁基醚(MTBE)裂解性能的影响。结果表明,(NH_4)_2SiF_6溶液修饰催化剂能够使得MTBE转化率高于95%,且甲醇选择性为100%。XRD和FTIR表征结果显示,(NH_4)_2SiF_6修饰γ-Al_2O_3上形成γ-AlF_3晶相,引入B酸的同时也增加了L酸量,从而提高了催化剂反应活性。The acidic properties and the application of alumina modified by halogen in the cracking of MTBE have been investigated. The results indicate that γ-Al2O_3 modified by( NH_4)_2SiF_6 exhibits excellent catalytic performance. Above 95% MTBE is converted into isobutene and the selectivity of Me OH is 100%. XRD,FTIR were used to characterize the acid sites and amount. γ-Al2O_3 modified by( NH_4)_2SiF_6 benefits the formation of γ-AlF_3. The introducing of B acid and the enhancement of the amount of L acid promote the cracking of MTBE.

关 键 词：固体酸催化剂 MTBE L酸 B酸 

分 类 号：TQ426.94[化学工程]