Extraction equilibria of hypophosphorous, phosphorous and phosphoric acids by toluene solution of tri-n-octylamine

• Autorzy: Sana T. , Shiomori K. , Kawano Y.
• Języki publikacji: EN

Abstrakty

EN

The extraction equilibria of hypophosphorous, phosphorous and phosphoric acids with tri-n-octylamine as an extractant in toluene were measured at 303K. Under these conditions, undissociated acid (A’) reacts with the amine (B) to form various complexes in toluene. The complexes formed and equilibrium constants were estimated by a graphical analysis method. The complexes formed in these systems were found to be A’nB type species for hypophosphorous acid, A’nBm type species for phosphorous acid, (A'B)n type species for phosphoric acid, respectively. The experimental results could be explained by reaction models and equilibrium constants for each acid.

Słowa kluczowe

EN

hypophosphorous acid; phosphorous acid; phosphoric acid; tri-n-octylamine; extraction equilibrium

• Wydawca: Faculty of Chemical Technology and Engineering, University of Technology and Life Sciences, Bydgoszcz
• Czasopismo: Ars Separatoria Acta
• Rocznik: 2003
• Tom: No. 2
• Strony: 125--138
• Opis fizyczny: Bibliogr. 11 poz., rys., tab.

Twórcy

autor

Sana T.

• Yoshitama Surface Finishing Co., LTD, Nobeoka 882-0024, Japan

autor

Shiomori K.

• Department of Applied Chemistry, Miyazaki Univ., Miyazaki 889-2192, Japan

autor

Kawano Y.

• Department of Applied Chemistry, Miyazaki Univ., Miyazaki 889-2192, Japan

Bibliografia

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• [7] K. Mishima, M. Nagatani, Y. Arai, Solvent Extraction, 1990, 117-182.
• [8] Y. Kawano, K. Kusano, in: Novel Graphical Method to Estimate Chemical Species Produced in Successive Equilibria, S. A. Newman (Ed.), ANNARBOR SCIENCE, Michigan, USA, 1982, p. 487-508.
• [9] Y. Kawano, K. Kusano, F. Nakashio, Kagaku Kogaku Ronnunshu, 1983, 9, 473-475.
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