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.
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:
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.