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Citation: LI Zhen-Yu, QIN Wei, DAI You-Yuan. Association Mechanism for Extraction of Propionic Acid by Trioctylamine[J]. Chinese Journal of Applied Chemistry, ;2001, 18(11): 861-864. shu

Association Mechanism for Extraction of Propionic Acid by Trioctylamine

1.
Department of Chemical Engineering, Tsinghua University, Beijing 100084

Received Date: 11 April 2001
Available Online: 13 August 2001

The extraction of propionic acid in organic phase has been carried out by using trioctylamine(TOA) as an extractant, n-octanol as a diluent. By FTIR technique the fraction of the ion-pair extracted species(Ⅰ) and apparent equilibrium constant K₁₁ were estimated. The results showed that the Ⅰ values obtained in this process depended on the association ability of ion-pair between propionic acid and TOA, concentration of TOA and solubility of the extracted species in organic phase.
- trioctylamine,
- propionic acid,
- ion-pair extracted species,
- extraction mechanism
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