在M_xO_y/Hβ分子筛固体强酸催化剂上的异丁烷-丁烯烷基化反应  

Study of isobutane-butens alkylation on Hβ molecular sieve strong acid loaded with alkali metal and rare earth metal

作　　者：孙闻东[1] 施维[1] 赵振波[2] 吴越[2] 

机构地区：[1]东北师范大学化学学院,吉林长春130024 [2]中国科学院长春应用化学研究所,吉林长春130022

出　　处：《东北师大学报（自然科学版）》2003年第3期37-42,共6页Journal of Northeast Normal University(Natural Science Edition)

基　　金：吉林省科技发展计划基金资助项目(20020665)

摘　　要：　用浸渍法制备了载碱金属、碱土金属和稀土金属的Hβ分子筛固体强酸催化剂MxOy/Hβ,用XRD,IR和NH3—TPD等方法对它们进行了结构表征和酸性测定,并在相同条件下比较了它们对异丁烷-丁烯烷基化反应的催化性能.结果表明,催化剂的活性与负载金属的本性有很大关系,助催化性能增加的次序是Li<Ca<La<Tm,这种差异起因于它们对Hβ分子筛酸性的改性程度.对烷基化油的分析结果表明,目的产物C8的收率明显好于Hβ分子筛.Hβ molecular sieve strong solid acid loaded with alkali metal,aldali earth metal and rare earth metal (MxOy/Hβ)were prepared by impregnation.The structural characterization and acid site measurements were carried out by XRD,IR and NH3 -TPD.Catalytic behaviors were investigated under similar conditions.Catalytic activity of isobutene-butene alkylation is related to the nature of loaded metal.Cocatalyst activity is in the order of :Li<Ca<La<Tm.The differences in catalytic behaviors of alkylation among various solid acids were attributed to the different modified degrees.As shown in the analysis of alkylates,the yields of target products C8 on those solid acids are higher than that on Hβ.

关 键 词：β-分子筛 固体酸催化剂 异丁烷-丁烯烷基化 

分 类 号：O643.32[理学—物理化学]