过渡金属改性HZSM-5催化乙醇脱水制乙烯  

Catalytic Dehydration of Ethanol to Ethylene Using Transition Metal Modified HZSM-5

作　　者：胡耀池[1] 黄和[2] 施海峰[2] 胡燚[2] 闫婕[2] 陈丽[2] 

机构地区：[1]湖南科技大学化学化工学院,湖南湘潭411201 [2]南京工业大学制药与生命科学学院,江苏南京210009

出　　处：《化学与生物工程》2007年第2期19-21,共3页Chemistry & Bioengineering

基　　金：中石化科技开发项目(205085)

摘　　要：分别考察了过渡金属铁、锰和钴改性HZSM-5对乙醇脱水制乙烯的影响,并对催化效果最好的催化剂进行了反应条件的优化。结果表明:Co/HZSM-5的催化性能最好,使用该催化剂在220℃、质量空速2.5 h-1、乙醇体积分数为60%的反应条件下,乙醇的转化率和乙烯的选择性分别高达99.6%和99.3%。HZSM-5 was modified by transition metals Fe, Mn and Co. And catalytic performances of modified HZSM-5 for the dehydration of ethanol to ethylene were studied. Co/HZSM-5 gave the best catalytic performance. The effects of temperature, weight hourly space velocity （WHSV） and ethanol volume fraction on Co/HZSM-5 were also investigated. Under 220℃ , the best ethanol conversion of 99.6% and ethylene selectivity of 99.3% were obtained when WHSV and ethanol volume fraction were 2.5 h^-1 and 60%, respectively.

关 键 词：过渡金属 乙醇 脱水 乙烯 HZSM-5 

分 类 号：TQ426[化学工程] TQ221.21