SCI和EI收录∣中国化工学会会刊

›› 2008, Vol. 16 ›› Issue (6): 867-870.

• • 上一篇    下一篇

Extraction Equilibria of Trimellitic and[1,1'-Biphenyl]-2,2'-dicarboxylic Acid with 1-Octanol,50% TBP,and 10% TRPO in Kerosene

周智勇, 秦炜, 戴猷元   

  1. State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • 收稿日期:2008-05-26 修回日期:2008-09-22 出版日期:2008-12-28 发布日期:2008-12-28
  • 通讯作者: QIN Wei,E-mail:qinwei@tsinghua.edu.cn
  • 基金资助:
    Supported by the Science and Technology Foundation of Beijing (GYYKW05070015)

Extraction Equilibria of Trimellitic and[1,1'-Biphenyl]-2,2'-dicarboxylic Acid with 1-Octanol,50% TBP,and 10% TRPO in Kerosene

ZHOU Zhiyong, QIN Wei, DAI Youyuan   

  1. State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • Received:2008-05-26 Revised:2008-09-22 Online:2008-12-28 Published:2008-12-28
  • Supported by:
    Supported by the Science and Technology Foundation of Beijing (GYYKW05070015)

摘要: To explore the feasibility of extracting aromatic acid products from oxidizing coal,two aromatic acids, trimellitic and[1,1'-biphenyl]-2,2'-dicarboxylic acid,were selected as the solutes,and the extraction equilibrium of the acids were studied with 1-octanol,50% tributyl phosphate(TBP)in kerosene,and 10% trialkylphosphine oxide (TRPO) in kerosene.The results showed that the degree of extraction of [1,1'-biphenyl]-2,2'-dicarboxylic acid was larger than that of trimellitic acid for all of the solvent,and the extraction capacity with TRPO is more effective than the one with TBP.The extraction behavior of aromatic polyacid is different from that of carboxylic acid,and the reactive extraction function of aromatic acids with TBP and TRPO is not as effective as that of carboxylic acid. 1-octanol could be used to remove[1,1'-biphenyl]-2,2'-dicarboxylic acid from the mixture of trimellitic acid and [1,1'-biphenyl]-2,2'-dicarboxylic acid.Because the weak hydrogen bond association exists between ——OH in 1-octanol and ——COOH in aromatic acid,the extractive selectivity of [1,1'-biphenyl]-2,2'-dicarboxylic to trimellitic acid depends on the stoichiometric ratio.

关键词: trimellitic acid, [1,1'-biphenyl]-2,2'-dicarboxylic acid, extraction equilibrium, 1-octanol, TBP and TRPO

Abstract: To explore the feasibility of extracting aromatic acid products from oxidizing coal,two aromatic acids, trimellitic and[1,1'-biphenyl]-2,2'-dicarboxylic acid,were selected as the solutes,and the extraction equilibrium of the acids were studied with 1-octanol,50% tributyl phosphate(TBP)in kerosene,and 10% trialkylphosphine oxide (TRPO) in kerosene.The results showed that the degree of extraction of [1,1'-biphenyl]-2,2'-dicarboxylic acid was larger than that of trimellitic acid for all of the solvent,and the extraction capacity with TRPO is more effective than the one with TBP.The extraction behavior of aromatic polyacid is different from that of carboxylic acid,and the reactive extraction function of aromatic acids with TBP and TRPO is not as effective as that of carboxylic acid. 1-octanol could be used to remove[1,1'-biphenyl]-2,2'-dicarboxylic acid from the mixture of trimellitic acid and [1,1'-biphenyl]-2,2'-dicarboxylic acid.Because the weak hydrogen bond association exists between ——OH in 1-octanol and ——COOH in aromatic acid,the extractive selectivity of [1,1'-biphenyl]-2,2'-dicarboxylic to trimellitic acid depends on the stoichiometric ratio.

Key words: trimellitic acid, [1,1'-biphenyl]-2,2'-dicarboxylic acid, extraction equilibrium, 1-octanol, TBP and TRPO