石油化工2013，Vol.42Issue(5)：483-488,6.
MnO/SAPO-34催化乙醇脱水制乙烯
Dehydration of Ethanol to Ethylene over MnO/SAPO-34 Catalyst
李娜 1陆江银 1李国锋 1熊丽萍 1马记源1
作者信息
- 1. 新疆大学化学化工学院石油天然气精细化工教育部重点实验室,新疆 乌鲁木齐 830046
- 折叠
摘要
Abstract
MnO/SAPO-34 catalysts with different MnO loadings were prepared by an impregnation method and characterized by means of N2 adsorption-desorption,XRD,NH3-TPD and H2-TPR.The activity of the catalysts in the dehydration of ethanol to ethylene was investigated.The results showed that the addition of an appropriate amount of MnO would not destroy the framework structure of SAPO34 but change its surface acidity.Increasing the ratio of the weak acid sites to the strong acid sites on the catalysts would improve the catalyst activity in the ethanol dehydration.Under the optimized conditions of 1.29％(w) MnO/SAPO-34 as the catalyst,reaction temperature of 300 ℃ and WHSV of 3.16 h-1,the ethanol conversion and ethylene selectivity could reach 99.99％ and 99.74％,respectively.关键词
乙醇脱水/乙烯/MnO/SAPO-34催化剂/积碳Key words
ethanol dehydration/ ethylene/ MnO/SAPO-34 catalyst/ carbon deposition分类
化学化工引用本文复制引用
李娜,陆江银,李国锋,熊丽萍,马记源..MnO/SAPO-34催化乙醇脱水制乙烯[J].石油化工,2013,42(5):483-488,6.
