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

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Air oxidation of 2,6-diisopropylnaphthalene to 2,6-naphthalenedicarboxylic acid in liquid phase

更新时间：2025-12-10

- Air oxidation of 2,6-diisopropylnaphthalene to 2,6-naphthalenedicarboxylic acid in liquid phase
- CIESC Journal Issue 8, Pages: 1996-2003(2007)
- 作者机构：
  
  北京石油化工学院化工系
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 August 2007，
  
  Published：05 August 2007
- 稿件说明：
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JIN Haibo, HAN Zhansheng, SHAN Xilin, et al. Air oxidation of 2,6-diisopropylnaphthalene to 2,6-naphthalenedicarboxylic acid in liquid phase[J]. CIESC Journal, 2007, (8): 1996-2003.
DOI：

JIN Haibo, HAN Zhansheng, SHAN Xilin, et al. Air oxidation of 2,6-diisopropylnaphthalene to 2,6-naphthalenedicarboxylic acid in liquid phase[J]. CIESC Journal, 2007, (8): 1996-2003. DOI：

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%。

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 Ni2+ 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.

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