丝光沸石上精萘的择形异丙基化反应  

Shape-selective Isopropylation of Refined Naphthalene over Mordenite

作　　者：贾宏敏[1] 田正华[1] 赵桂利[1] 李犇[1] 

机构地区：[1]鞍山科技大学化工学院,辽宁鞍山114044

出　　处：《精细化工》2006年第2期205-208,共4页Fine Chemicals

基　　金：鞍山市科技基金资助项目(NO.032042)~~

摘　　要：2,6-二异丙基萘(2,6-D IPN)是制备高级聚酯材料PEN和液晶聚合物的原料。该文以精萘和丙烯为原料,以水汽脱铝氢型丝光沸石(SDHM)代替传统的傅-克催化剂,在0.5 L高压釜中进行择形异丙基化反应,得到了高选择性和高收率的2,6-D IPN。不同来源的精萘中的含氮量对催化剂的活性产生很大影响。含氮量越低,异丙基化效果越好。为了减缓催化剂的失活,反应在氢氛下进行,以降低稠环芳烃的脱氢和结焦。和氮氛下的结果相比,氢氛下精萘的转化率和2,6-D IPN的产率均显著提高,其连续反应7釜的平均值分别达到90%和35%。2,6-Diisopropylnaphthalene （2,6-DIPN） is a raw material for the production of advanced polyester materials such as PEN and liquid crystalline polymers. In this study, the preparation of 2,6-DIPN through the shape-selective isopropylation of refined naphthalene with propylene was processed in 0. 5 L autoclave with steam dealuminated H-mordenite （SDHM） as the catalyst instead of the conventional Friedel-Crafts catalysts and resuhed in a high selectivity and a high yield of 2,6-DIPN. The nitrogen content in different sources of refined naphthalene showed great impact on the activity of SDHM. The lower the nitrogen content in naphthalene, the better the results of isopropylation. In order to slacken the deactivation of SDHM, the reaction was carried out under H2 atmosphere. The dehydrogenation of fused-ring polycyclic could be minimized and the coke formation could be reduced. Comparing with the results obtained under nitrogen atmosphere, the conversion of refined naphthalene and yield of 2,6-DIPN of continuous 7 runs could be remarkably increased to an average value as high as 90% and 35% respectively.

关 键 词：精萘 2 6-二异丙基萘 水汽脱铝氢型丝光沸石 择形异丙基化 

分 类 号：O621.25[理学—有机化学]