2,6-二异丙基萘的分离精制  

Separation and Purification of 2,6-Diisoproylnaphthalene

作　　者：李文艳[1] 杨春育[2] 靳海波[2] 罗国华[2] 何广湘[2] 

机构地区：[1]北京化工大学化工系,北京100029 [2]北京石油化工学院化工系,北京102617

出　　处：《过程工程学报》2005年第1期40-43,共4页The Chinese Journal of Process Engineering

摘　　要：研究了从萘与丙烯合成的异丙基萘混合物中分离、精制2,6-二异丙基萘(2,6-DIPN)的方法.考察了精馏操作条件对精馏分离结果的影响,并研究了结晶温度及溶剂对产品纯度和收率的影响.实验结果表明,以自行合成的烷基化产品混合物为粗产品,在1000Pa真空度下减压精馏,收集165℃的馏出物可得到含量约50%的2,6-DIPN,将此馏分在9℃下结晶,所得晶体以乙醇为溶剂洗涤2次后,可精制出纯度为99.42%的2,6-DIPN.The separation and purification of 2,6-diisopropylnaphthalene from the products prepared by alkylation of naphthalene and propylene are studied. The influence of operation conditions on distillation separation and that of crystallization temperature and solvent on purity and yield of the final product are examined. The experimental results show that the purity of 2,6-diisopropylnaphthalene is about 50% by collecting 165℃ distillate under the vacuum of 1000 Pa. Final product of 2,6-diisopropylnaphthalene with purity 99.42% is gained after the distillate is crystallized at 9℃ and the crystal is washed by ethanol.

关 键 词：2 6-二异丙基萘 分离 精馏 结晶 

分 类 号：TQ241[化学工程—有机化工]