纳米MCM-49分子筛催化二异丙苯烷基转移反应催化性能研究  

Study on Transalkylation of Diisopropylbenzene with Benzene over Nano MCM-49 Zeolite

作　　者：赵飞[1] 张钰[2] 柳静[3] 

机构地区：[1]吉林化工学院研究生处,吉林吉林132012 [2]吉林化工学院化工与材料工程学院,吉林吉林132012 [3]东北师范大学化学学院,吉林长春130024

出　　处：《吉林化工学院学报》2012年第9期1-5,共5页Journal of Jilin Institute of Chemical Technology

基　　金：吉林省科技开发计划资助项目(20090588);吉林化工学院分析测试中心测试基金资助

摘　　要：采用动态水热合成方法制备了纳米MCM-49分子筛,采用XRD、N2吸附-脱附、SEM和FTIR等手段对其结构和酸性进行了表征,考察了纳米MCM-49分子筛催化二异丙苯与苯烷基转移反应的催化性能.研究结果表明,所合成的分子筛为高结晶度的纳米MCM-49分子筛.在二异丙苯与苯的烷基转移反应中,适当提高反应温度、降低空速、降低分子筛硅铝比有利于提高二异丙苯转化率和异丙苯收率.在烷基转移反应温度为200℃,二异丙苯空速为2 h-1条件下,二异丙苯转化率达到86.51%,异丙苯收率接近95%.MCM-49 zeolites were prepared by hydrothermally dynamic method. The structure and acid properties of samples were studied by means of XRD, N2 adsorption-desorption, SEM and FTIR. The catalytic behavior of namo MCM-49 zeolite in diisopropylbenzene transalkylation with benzene was studied. It was found that high crystallized namo MCM-49 zeolite had been synthesized. To increase the reaction temperature, decrease the space velocity of diisopropylbenzene and decrease the silicon to aluminum molar ratio is beneficial to enhance the conversion of diisopropylbenzene and the yield of isopropylbenzene. The conversion of diisopropylbenzene is 86.51% and the yield of isopropylbenzene is about 95% when the reaction was carried out under 200 ℃ with a diisoproovlbenzene soace velocity of 2 h^ -1

关 键 词：纳米MCM-49分子筛 二异丙苯 烷基转移 催化性能 

分 类 号：TQ032.41[化学工程]