引用本文:
韩树民, 李德谦. PMBP与HEH[EHP]对Fe(Ⅲ)的协同萃取[J]. 应用化学,
1992, 9(1): 7-12.
Citation: Han Shumin, Li Deqian. SYNERGISTIC EXTRACTION OF IRON (Ⅲ) WITH PMBP AND HEH[EHP][J]. Chinese Journal of Applied Chemistry, 1992, 9(1): 7-12.
Citation: Han Shumin, Li Deqian. SYNERGISTIC EXTRACTION OF IRON (Ⅲ) WITH PMBP AND HEH[EHP][J]. Chinese Journal of Applied Chemistry, 1992, 9(1): 7-12.
PMBP与HEH[EHP]对Fe(Ⅲ)的协同萃取
摘要:
本文研究了1-苯基-3-甲基-4-苯甲酰基吡唑酮-5(PMBP,HL)和2-乙基己基膦酸单(2-乙基己基)酯(HEH[EHP],HA)的二甲苯溶液对盐酸介质中Fe(Ⅲ)的AA类协同萃取。用斜率法确定二元协萃配合物组成为FeL2A,计算了协萃反应的平衡常数和热力学函数,讨论了协萃配合物的IR和1H NMR谱。
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关键词:
- 1-苯基-3-甲基-4-苯甲酰基吡唑酮-5
- / 2-乙基己基膦酸单(2-乙基己基)酯
- / 铁(Ⅱ)
- / 协同萃取
English
SYNERGISTIC EXTRACTION OF IRON (Ⅲ) WITH PMBP AND HEH[EHP]
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:Fe3+2HL(0)+(1/2)(H2A2)(0)
FeL2A(0)+3H+ FeL3(0)+(1/2)(H2A2)(0)
FeL2A(0)+HL(0) Fe(HA2)3(0)+2HL(0)
FeL2A(0)+(5/2)(H2A2)(0) Their equilibrium constants and thermodynamic functions have been calculated to be:lgKAA=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.
FeL2A(0)+3H+ FeL3(0)+(1/2)(H2A2)(0)FeL2A(0)+HL(0) Fe(HA2)3(0)+2HL(0)FeL2A(0)+(5/2)(H2A2)(0) Their equilibrium constants and thermodynamic functions have been calculated to be:lgKAA=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.-
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