Extraction of dicarboxylic acids by ABC extractants (2025)

Syzova, N., Eyal, A. M., Vitner, A., & Hazan, B. (2004). Extraction of dicarboxylic acids by ABC extractants. Solvent Extraction and Ion Exchange, 22(1), 51-67. https://doi.org/10.1081/SEI-120027573

Syzova, N. ; Eyal, A. M. ; Vitner, A. et al. / Extraction of dicarboxylic acids by ABC extractants. In: Solvent Extraction and Ion Exchange. 2004 ; Vol. 22, No. 1. pp. 51-67.

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title = "Extraction of dicarboxylic acids by ABC extractants",

abstract = "Extraction of various dicarboxylic acids (maleic, malic, malonic, succinic, and tartaric) by acid-base couple (ABC) extractants was studied. The main extraction mechanisms were found to be ion-pair and hydrogen-bond formation. The relative contribution of each mechanism and extraction efficiency were found to be controlled by parameters such as acid-base properties and hydrogen-bonding capability of the components of the ABC extractants and those of the extracted dicarboxylic acid. Typical ion-pair formation was observed for extraction of all tested acids with extractants composed of a primary amine and a fatty carboxylic acid. Typical H-bond formation is shown for extraction of most acids with an extractant composed of a tertiary amine and a diester of phosphoric acid. All other cases had mixed contributions. Strong interactions between the extractant components limited extraction in both mechanisms. The results were also analyzed in comparison with the extraction of monocarboxylic acids. Dicarboxylic acids are better extracted in those cases where the acid-base properties of the system components favor ion-pair formation. In extraction through H-bonds, on the other hand, the greater hydrophilicity of the dicarboxylic acids limits the extraction.",

keywords = "ABC extractants, Dicarboxylic acids, Extraction, H-bond formation, Ion-pair formation",

author = "N. Syzova and Eyal, {A. M.} and A. Vitner and B. Hazan",

year = "2004",

month = jan,

doi = "10.1081/SEI-120027573",

language = "אנגלית",

volume = "22",

pages = "51--67",

journal = "Solvent Extraction and Ion Exchange",

issn = "0736-6299",

publisher = "Taylor and Francis Ltd.",

number = "1",

}

Syzova, N, Eyal, AM, Vitner, A & Hazan, B 2004, 'Extraction of dicarboxylic acids by ABC extractants', Solvent Extraction and Ion Exchange, vol. 22, no. 1, pp. 51-67. https://doi.org/10.1081/SEI-120027573

Extraction of dicarboxylic acids by ABC extractants. / Syzova, N.; Eyal, A. M.; Vitner, A. et al.
In: Solvent Extraction and Ion Exchange, Vol. 22, No. 1, 01.2004, p. 51-67.

Research output: Contribution to journal › Article › peer-review

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T1 - Extraction of dicarboxylic acids by ABC extractants

AU - Syzova, N.

AU - Eyal, A. M.

AU - Vitner, A.

AU - Hazan, B.

PY - 2004/1

Y1 - 2004/1

N2 - Extraction of various dicarboxylic acids (maleic, malic, malonic, succinic, and tartaric) by acid-base couple (ABC) extractants was studied. The main extraction mechanisms were found to be ion-pair and hydrogen-bond formation. The relative contribution of each mechanism and extraction efficiency were found to be controlled by parameters such as acid-base properties and hydrogen-bonding capability of the components of the ABC extractants and those of the extracted dicarboxylic acid. Typical ion-pair formation was observed for extraction of all tested acids with extractants composed of a primary amine and a fatty carboxylic acid. Typical H-bond formation is shown for extraction of most acids with an extractant composed of a tertiary amine and a diester of phosphoric acid. All other cases had mixed contributions. Strong interactions between the extractant components limited extraction in both mechanisms. The results were also analyzed in comparison with the extraction of monocarboxylic acids. Dicarboxylic acids are better extracted in those cases where the acid-base properties of the system components favor ion-pair formation. In extraction through H-bonds, on the other hand, the greater hydrophilicity of the dicarboxylic acids limits the extraction.

AB - Extraction of various dicarboxylic acids (maleic, malic, malonic, succinic, and tartaric) by acid-base couple (ABC) extractants was studied. The main extraction mechanisms were found to be ion-pair and hydrogen-bond formation. The relative contribution of each mechanism and extraction efficiency were found to be controlled by parameters such as acid-base properties and hydrogen-bonding capability of the components of the ABC extractants and those of the extracted dicarboxylic acid. Typical ion-pair formation was observed for extraction of all tested acids with extractants composed of a primary amine and a fatty carboxylic acid. Typical H-bond formation is shown for extraction of most acids with an extractant composed of a tertiary amine and a diester of phosphoric acid. All other cases had mixed contributions. Strong interactions between the extractant components limited extraction in both mechanisms. The results were also analyzed in comparison with the extraction of monocarboxylic acids. Dicarboxylic acids are better extracted in those cases where the acid-base properties of the system components favor ion-pair formation. In extraction through H-bonds, on the other hand, the greater hydrophilicity of the dicarboxylic acids limits the extraction.

KW - ABC extractants

KW - Dicarboxylic acids

KW - Extraction

KW - H-bond formation

KW - Ion-pair formation

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Syzova N, Eyal AM, Vitner A, Hazan B. Extraction of dicarboxylic acids by ABC extractants. Solvent Extraction and Ion Exchange. 2004 Jan;22(1):51-67. doi: 10.1081/SEI-120027573