锆硅分子筛催化乙醇脱水制乙烯  

Conversion of Alcohol into Ethylene over Mesoporous Zr/Si Catalyst

作　　者：罗佩[1] 李本祥[1] 董新荣[1] 

机构地区：[1]湖南农业大学理学院应用化学系,湖南长沙410128

出　　处：《化工技术与开发》2014年第4期35-37,10,共4页Technology & Development of Chemical Industry

摘　　要：采用水热合成法制备了锆硅介孔分子筛催化剂,并通过XRD、N2吸附-脱附进行了表征,表明其具有介孔结构。以乙醇脱水制乙烯为模型反应,考察了催化剂的活性。结果表明,在锆硅摩尔比为1∶2、焙烧温度440℃、焙烧时间3h所制备出的催化剂,在脱水温度310℃,进料空速0.7h-1,乙烯收率在99%以上时,进料可用低浓度乙醇。Mesoporous Zr/Si materials was synthesized under hydrothermal conditions,and characterized by XRD and nitrogen adsorption-desorption.The results showed that the obtained materials were of the characteristics of mesoporous molecular sieves. Mesoporous Zr/Si was used as catalyst in the procedure of alcohol into ethylene.Results indicated that molar ratio of Zr/Si was 1∶2,calcination temperature was 440℃, calcination time was 3h, reaction temperature was 310℃,and feed space velocity was 0.7h-1, the catalytic performance was better than the others and yield of ethylene was higher than 99%.Low concentration ethanol could be used as feed.

关 键 词：锆硅分子筛 催化 乙醇 乙烯 

分 类 号：TQ221.211[化学工程—有机化工]