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Derivatives of imidopyrophosphoric acids as extractants. Part 4. Extraction of nitric acid by N,N-N[prime],N[prime]-octabutylimidodiphosphotetramide

Journal Article · · Solvent Extraction and Ion Exchange; (United States)
 [1]
  1. Atomic Energy Corp. of South Africa Ltd., Pretoria (South Africa)
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The extraction of nitric acid from aqueous solutions ranging from 0.2 to 8 M nitric acid has been investigated using the novel extractant, N,N-N[prime],NP[prime]-octabutylimidodiphosphotetramide which is at present under study as a possible trivalent f-element extractant. Thermodynamic modelling using non-linear least squares fitting of distribution data found that three complexes were formed in organic phases consisting of various concentrations of the extractant in CCl[sub 4]. These were (E.HNO[sub 3]), (2E.HNO[sub 3]) and (E.2HNO[sub 3]). Extraction equilibrium constants were calculated for all three complexes and found to vary with initial extractant concentration. 16 refs., 4 figs., 1 tab.

OSTI ID:
6487403
Journal Information:
Solvent Extraction and Ion Exchange; (United States), Journal Name: Solvent Extraction and Ion Exchange; (United States) Vol. 11:2; ISSN 0736-6299; ISSN SEIEDB
Country of Publication:
United States
Language:
English

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CARBON TETRACHLORIDE
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