• RESEARCH PAPERS • Previous Articles     Next Articles

Distribution Behavior of Aminobenzoic Acid by Extraction with Di(2-ethylhexyl)phosphoric
Acid

ZHANG Jina; DAI Youyuanb   

  1. a Department of Fundamental Sciences, Beijing University of Posts and Telecommunications,
    Beijing 100876, China
    b Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2000-12-18 Published:2000-12-18
  • Contact: ZHANG Jin

二(2-乙基已基)磷酸萃取氨基苯甲酸的平衡特性

张瑾a; 戴猷元b   

  1. a Department of Fundamental Sciences, Beijing University of Posts and Telecommunications,
    Beijing 100876, China
    b Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • 通讯作者: 张瑾

Abstract: A series of extraction equilibrium experiments for aminobenzoic acid with di(2-ethylhexyl)
phosphoric acid (D2EHPA) dissolved in n-octane or 1-octanol was carried out. The effects of
aminobenzoic acid concentration, D2EHPA concentration and pH on the distribution ratio were
discussed in detail. The infrared spectra of the organic phase loaded with solute
illustrated that pH had little effect on the structure of the complex formed. There proceed
ion association and cation-exchange reaction in the extraction. An expression of the
equilibrium distribution was proposed.

Key words: extraction, chemical complexation, aminobenzoic acid, D2EHPA, pH value

摘要: A series of extraction equilibrium experiments for aminobenzoic acid with di(2-ethylhexyl)
phosphoric acid (D2EHPA) dissolved in n-octane or 1-octanol was carried out. The effects of
aminobenzoic acid concentration, D2EHPA concentration and pH on the distribution ratio were
discussed in detail. The infrared spectra of the organic phase loaded with solute
illustrated that pH had little effect on the structure of the complex formed. There proceed
ion association and cation-exchange reaction in the extraction. An expression of the
equilibrium distribution was proposed.

关键词: extraction;chemical complexation;aminobenzoic acid;D2EHPA;pH value