SYNERGISTIC EXTRACTION OF IRON (Ⅲ) WITH PMBP AND HEH[EHP]

Chinese Journal of Applied Chemistry ›› 1992, Vol. 0 ›› Issue (1): 7-12.

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SYNERGISTIC EXTRACTION OF IRON (Ⅲ) WITH PMBP AND HEH[EHP]

Han Shumin, Li Deqian

Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022

Received:1991-01-07 Revised:1991-07-17 Published:1992-02-10 Online:1992-02-10

Abstract

Abstract: The synergistic extraction of Fe(Ⅲ) from (Na, H) Cl Solution with 1-Phenyl-3-methyl-4-benzoyl-pyrazotonl-5(PMBP, HL) and 2-ethylhexylphosphonic acid mono-2-ethyl-hexyl ester (HEH[EHP], HA) in xylene has been investigated. The composition of extracted complex has been determined to be FeL₂A by the method of slope analysis, the mechanism of the synergistic extraction of Fe (Ⅲ) may be as follows: Their equilibrium constants and thermodynamic functions have been calculated to be:lgK_AA=7.56±0.23 lgβ'=0.16 lgβ"=5.16 ΔH=21.76kJ/mol ΔG=-43.36kJ/mol ΔS=218.52J/mol.K, respectively. The IR and ¹H NMR spectra of the synergistic extraction complex of Fe(Ⅲ) have been discussed as well.

Key words: 1-phenyl-3-methyl-4-benzoyl-pyrazolonl-5, 2-ethylhexyl phosphonic acid mono 2-ethyl-hexyl ester Iron(Ⅲ), synergistic extraction

Han Shumin, Li Deqian. SYNERGISTIC EXTRACTION OF IRON (Ⅲ) WITH PMBP AND HEH[EHP][J]. Chinese Journal of Applied Chemistry, 1992, 0(1): 7-12.

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SYNERGISTIC EXTRACTION OF IRON (Ⅲ) WITH PMBP AND HEH[EHP]

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