2,6-二异丙基萘液相空气氧化制2,6-萘二甲酸  

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

作　　者：靳海波[1] 韩占生[1] 单希林[1] 李达仁[1] 吴志强[1] 杨春育[1] 

机构地区：[1]北京石油化工学院化工系,北京102617

出　　处：《化工学报》2007年第8期1996-2003,共8页CIESC Journal

摘　　要：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.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.

关 键 词：2 6-二异丙基萘 2 6-萘二甲酸 液相氧化反应 Co-Mn-Br催化剂 

分 类 号：TQ245.13[化学工程—有机化工]