Preparation of 2,6-diisopropylnaphthalene with recycled process of isomers  

作　　者：Zheng Hua Tian Gui Li Zhao Hong Min Jia Ben Li Wei Qi Hu 

机构地区：[1]School of Chemical Engineering,University of Science ＆ Technology Liaoning.Anshan 114051,China

出　　处：《Chinese Chemical Letters》2008年第4期390-394,共5页中国化学快报（英文版）

摘　　要：2,6-Diisopropylnaphthalene（2,6-DIPN）,as the precursor of important monomer 2,6-naphthalene dicarboxylic acid,was prepared by hydroisopropylation of refined naphthalene with propene over shape-selective catalyst.Naphthalene conversion of 92% and 2,6-DIPN selectivity of 64% were obtained.Static melt crystallization was applied to separate and purify 2,6-DIPN from its isomers,resulted in a product purity of≥99%.The other isomers were converted into monoisopropylnaphthalene,which also reacted with propene to form 2,6-DIPN.A recycled process including hydroisopropylation,separation and transalkylation was established,the yield of 2,6-DIPN based on naphthalene could be doubled by one cycle operation.2,6-Diisopropylnaphthalene（2,6-DIPN）,as the precursor of important monomer 2,6-naphthalene dicarboxylic acid,was prepared by hydroisopropylation of refined naphthalene with propene over shape-selective catalyst.Naphthalene conversion of 92% and 2,6-DIPN selectivity of 64% were obtained.Static melt crystallization was applied to separate and purify 2,6-DIPN from its isomers,resulted in a product purity of≥99%.The other isomers were converted into monoisopropylnaphthalene,which also reacted with propene to form 2,6-DIPN.A recycled process including hydroisopropylation,separation and transalkylation was established,the yield of 2,6-DIPN based on naphthalene could be doubled by one cycle operation.

关 键 词：2 6-DIISOPROPYLNAPHTHALENE Hydroisopropylation Static melt crystallization Intermolecular transalkylation Recycled process 

分 类 号：O625[理学—有机化学]