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2,6-二异丙基萘液相空气氧化制2,6-萘二甲酸
引用本文:靳海波,韩占生,单希林,李达仁,吴志强,杨春育. 2,6-二异丙基萘液相空气氧化制2,6-萘二甲酸[J]. 化工学报, 2007, 58(8): 1996-2003
作者姓名:靳海波  韩占生  单希林  李达仁  吴志强  杨春育
作者单位:北京石油化工学院化工系,北京,102617;北京石油化工学院化工系,北京,102617;北京石油化工学院化工系,北京,102617;北京石油化工学院化工系,北京,102617;北京石油化工学院化工系,北京,102617;北京石油化工学院化工系,北京,102617
摘    要:在1 L钛材反应釜内,采用Co-Mn-Br系催化剂对2,6-二异丙基萘(2,6-DIPN)液相氧化合成2,6-萘二甲酸(2,6-NDCA)的工艺条件进行了研究。采用反相高效液相色谱法分析2,6-萘二甲酸的纯度,考察了催化剂的量、反应温度、压力、原料的进料量、体系的含水量等因素对氧化反应结果的影响,得出了氧化反应较为适宜的操作条件;考察了在含氧气体中添加一定量的CO2和催化剂中加入Ni对氧化反应的影响,结果表明,CO2和Ni都可作为反应促进剂,明显提高产物的收率和纯度。在适宜的工艺条件下,实现了2,6-萘二甲酸的连续化生产,反应稳定后产品纯度可达到95%以上,随反应时间的延长,2,6-NDCA收率由69%提高到73%。

关 键 词:2  6-二异丙基萘  6-萘二甲酸  液相氧化反应  Co-Mn-Br催化剂
文章编号:0438-1157(2007)08-1996-08
收稿时间:2006-12-04
修稿时间:2006-12-04

Air oxidation of 2,6-diisopropylnaphthalene to 2,6-naphthalenedicarboxylic acid in liquid phase
JIN Haibo,HAN Zhansheng,SHAN Xilin,LI Daren,WU Zhiqiang,YANG Chunyu. Air oxidation of 2,6-diisopropylnaphthalene to 2,6-naphthalenedicarboxylic acid in liquid phase[J]. Journal of Chemical Industry and Engineering(China), 2007, 58(8): 1996-2003
Authors:JIN Haibo  HAN Zhansheng  SHAN Xilin  LI Daren  WU Zhiqiang  YANG Chunyu
Affiliation:Department of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China
Abstract:The influences of catalyst concentration, reaction temperature and pressure, feed rate, and water content on the liquid phase oxidation of 2,6-diisopropylnaphthalene to 2,6-naphthalenedicarboxylic acid (2,6-NDCA)were studied in a 1 L titanium reactor using air as oxidant, acetic acid as solvent, and a Co-Mn-Br mixture as catalyst, and the optimum operation conditions were obtained in the experimental range.Meanwhile, the promotor effects of individual CO2 and Ni 2 and their combined use on the activity of Co-Mn-Br catalyst were discussed.Based on the results of the batch experiments, a continuous process for making 2,6-NDCA was developed.The yield of 2,6-NDCA increased from 69% to 73% and the purity of 2,6-NDCA could be up to 95% with the increasing of reaction time.
Keywords:2  6-diisopropylnaphthalene  2  6-naphthalenedicarboxylic acid  liquid phase oxidation process  Co-Mn-Br catalyst
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