活性炭负载浓硫酸催化间二甲苯与氯化苄的烷基化反应  

Activated Carbon Loaded Concentrated Sulfuric Acid as Catalyst for Alkylation of m-Xylene with Benzyl Chloride

作　　者：侯国安[1,2] 郝枫林 杨金会[1] 

机构地区：[1]宁夏大学天然气转化国家重点实验室培育基地,宁夏银川750021 [2]银川能源学院,宁夏银川750015 [3]华西中学,宁夏银川750021

出　　处：《化学世界》2015年第1期34-36,41,共4页Chemical World

基　　金：国家自然科学基金(No.21162021);教育部"新世纪优秀人才支持计划资助"(No.NCET-09-0860);银川能源学院科研项目资助(2013-KY-Y-04)

摘　　要：以活性炭负载浓硫酸作为固体催化剂,以间二甲苯与氯化苄为原料进行合成反应,研究了反应温度、反应时间、原料配比和催化剂用量对反应的影响,确定了最佳工艺条件:即n(间二甲苯)∶n(氯化苄)=3∶1,反应温度100℃,反应时间9h,催化剂用量13.2%(相对于氯化苄),2-苄基-1,5-二甲苯产率为59.3%;n(间二甲苯)∶n(氯化苄)=3∶1,反应温度100℃,反应时间8h,催化剂用量18.5%(相对于氯化苄),3-苄基-1,5-二甲苯产率为18.0%。Activated carbon load concentrated sulfuric acid was used as a solid catalyst for alkylation of mxylene with benzyl chloride.The effect of reaction temperature,reaction time,ratio of raw materials and amount of catalyst on the reaction was investigated.The optimum conditions were as follows：n（m-xylene）∶n（benzyl chloride）=3∶1,reaction temperature 100℃,reaction time 9hand the amount of catalyst 13.2%（relative to benzyl green）.The yield of 2-benzyl 1,5-xylene was 59.3%.When n（m-xylene）∶n（benzyl chloride）= 3∶1,reaction temperature 100 ℃,reaction time 8hand the amount of catalyst18.5%（relative to the benzyl green）,The yield of 3-benzyl-1,5-xylene was 18.0%.

关 键 词：间二甲苯 改性活性炭 催化 烷基化 

分 类 号：O621.25[理学—有机化学]