SO_4^(2-)/ZrO_2-TiO_2催化苯与1-十二烯烷基化合成十二烷基苯  

Synthesis of dodecylbenzene with benzene and 1-dodecene catalyzed by SO_4^(2-)/ZrO_2-TiO_2

作　　者：王知彩[1] 孙康[2] 刘九玲[1] 

机构地区：[1]安徽工业大学化学与化工学院应用化学系,安徽马鞍山243002 [2]四川教育学院理学院,四川成都610041

出　　处：《分子催化》2007年第1期38-42,共5页Journal of Molecular Catalysis(China)

基　　金：安徽省高校青年基金资助(2003jq134).

摘　　要：利用沉淀-浸渍法制备了SO42-/ZrO2-TiO2固体酸催化剂,优化了SO42-/ZrO2-TiO2催化苯与1-十二烯烷基化合成十二烷基苯的工艺条件,并通过IR及GC/MS对产物的结构进行了表征.结果表明:SO42-/ZrO2-TiO2对苯与1-十二烯的烷基化反应具有良好的催化性能,其催化中心主要为B酸中心.0.12g催化剂/mL1-十二烯、n(苯)/n(烯)=6∶1、反应时间3h等优化条件下1-十二烯转化率100%,LAB与2-LAB选择性分别达到90.3%和88.6%.使用后的催化剂可以通过H2SO4浸渍500℃焙烧再生.GC/MS分析表明产物主要包括2~6-LAB及少量二烷基苯.a novel solid acid of SO42-/ZrO2-TiO2 was prepared and characterized. The effects of reaction conditions on the alkylation of between benzene and 1-dodecene catalyzed by SO42-/ZrO2-TiO2 were studied. The structures of products were characterized by IR spectrum and GC/MS. The results indicated that SO42-/ZrO2-TiO2 mainly consisted of B acid site shows excellent catalytic behaviors. The conversion of 1-dodecene and the selectivity of LAB and 2-LAB are respectively 100%, 90.3% and 88.6% under the optimized reaction conditions, which are 0.12 g catalysts/(mL 1-dodecene), benzene/1-dodecene 6 and reaction time 3 hours. The catalytic activity of used catalyst can be recovered partly by regeneration method of calcinations under 500 ℃ after H2SO4 impregnating. In addition, the characterizations with GC/MS suggest that the products mainly consisted with 2~6-LAB and a few dialkylbenzene.

关 键 词：SO42-/ZrO2-TiO2固体酸 烷基化 1-十二烯 合成 

分 类 号：O643.32[理学—物理化学]