SO_4^(2-)/ZrO_2催化氯化苄与苯烷基化反应的气相色谱-质谱法分析  

Gas Chromatography-Mass Spectrometric Analysis of the Products of Alkylation of Benzene with Benzyl Chloride Catalyzed bySO_4^(2-)/ZrO_2 Solid Superacid

作　　者：王知彩[1] 

机构地区：[1]安徽工业大学应用化学系,马鞍山243002

出　　处：《分析化学》2006年第2期219-222,共4页Chinese Journal of Analytical Chemistry

基　　金：安徽省高校青年基金资助(No.2003jq134)

摘　　要：采用气相色谱-质谱法(GC/MS)对SO42-/ZrO2固体超强酸催化氯化苄与苯烷基化反应产物的组成与结构进行了分析,并对SO42-/ZrO2催化的选择性进行了初步探讨。结果表明:SO42-/ZrO2固体超强酸对氯化苄与苯的烷基化反应具有良好的催化活性,反应产物主要为二苯甲烷、苄基二苯甲烷与氯甲基二苯甲烷等7种苄基化物。SO42-/ZrO2固体超强酸催化的产物选择性与经典Lew is酸催化特征基本一致。The alkylation of benzene with benzyl chloride was catalyzed by SO4^2-/ZrO2 solid superacid, the composition and structure of products were analyzed by gas chromatography/mass spectrometry and the selectivity of alkylation was also discussed preliminarily. The results show that SO4^2-/ZrO2 solid superacid has better catalytic activity for the alkylation of benzene using benzyl chloride as alkylating agent, and the conversion of benzyl chloride is 28.8% under refluxing temperature. There is mainly seven benzylation products in reaction, such as diphenylmethane, benzyl diphenylmethane and chloromethyl diphenylmethane, and the selectivity of diphenylmethane is 76.65%. For the selectivity of products, SO4^2-/ZrO2 solid superacid is in agreement with that of classic Lewis catalyst.

关 键 词：SO4^2-/ZrO2固体超强酸 烷基化 氯化苄 气相色谱-质谱 解析 

分 类 号：O657.63[理学—分析化学]