Theoretical Foundations of Chemical Engineering, volume 55, issue 2, pages 270-275

Chemistry of the Extraction of La(NO3)3 and Ce(NO3)3 from Nitrate Solutions with Mixtures of Tri-n-Octylmethylammonium Nitrate and Tri-n-Butyl Phosphate in Toluene

Publication typeJournal Article
Publication date2021-03-01
Quartile SCImago
Q3
Quartile WOS
Q4
Impact factor0.8
ISSN00405795, 16083431
General Chemistry
General Chemical Engineering
Abstract
The boundaries of the regions of the synergistic extraction of lanthanum nitrate and cerium(III) nitrate from low-acid nitrate solutions containing the salting-out agent NH4NO3 with 1.0 M isomolar mixtures of tri-n-octylmethylammonium nitrate and tri-n-butyl phosphate (TBP) in toluene were determined by the method of isomolar series. For the first time, the chemistry of the extraction in the determined regions of the synergistic effect is defined as a continuous sequence of the mixed complexes being extracted with the composition (R4N)n[Ln(NO3)3 + n ⋅ mTBP], where n = 1–3, m = 3–1 for lanthanum and n = 1–3, m = 4–1 for cerium(III), depending on the molar ratio between the extractants. The opposite changes in n and m in the mixed complexes with increasing concentration of the quaternary salt in the mixture is explained by the replacement of phosphoryl ligands of tri-n-butyl phosphate by nitrate ligands of tri-n-octylmethylammonium nitrate until their complete replacement from the coordination sphere of the lanthanide.

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Stepanov S. I. et al. Chemistry of the Extraction of La(NO3)3 and Ce(NO3)3 from Nitrate Solutions with Mixtures of Tri-n-Octylmethylammonium Nitrate and Tri-n-Butyl Phosphate in Toluene // Theoretical Foundations of Chemical Engineering. 2021. Vol. 55. No. 2. pp. 270-275.
GOST all authors (up to 50) Copy
Stepanov S. I., Hoa N. T. Y., Chekmarev A. M., Tsivadze A. Y. Chemistry of the Extraction of La(NO3)3 and Ce(NO3)3 from Nitrate Solutions with Mixtures of Tri-n-Octylmethylammonium Nitrate and Tri-n-Butyl Phosphate in Toluene // Theoretical Foundations of Chemical Engineering. 2021. Vol. 55. No. 2. pp. 270-275.
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TY - JOUR
DO - 10.1134/S0040579521020111
UR - https://doi.org/10.1134%2FS0040579521020111
TI - Chemistry of the Extraction of La(NO3)3 and Ce(NO3)3 from Nitrate Solutions with Mixtures of Tri-n-Octylmethylammonium Nitrate and Tri-n-Butyl Phosphate in Toluene
T2 - Theoretical Foundations of Chemical Engineering
AU - Stepanov, S. I.
AU - Hoa, Nguyen Thi Yen
AU - Chekmarev, A. M.
AU - Tsivadze, A. Yu.
PY - 2021
DA - 2021/03/01 00:00:00
PB - Pleiades Publishing
SP - 270-275
IS - 2
VL - 55
SN - 0040-5795
SN - 1608-3431
ER -
BibTex |
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@article{2021_Stepanov
author = {S. I. Stepanov and Nguyen Thi Yen Hoa and A. M. Chekmarev and A. Yu. Tsivadze},
title = {Chemistry of the Extraction of La(NO3)3 and Ce(NO3)3 from Nitrate Solutions with Mixtures of Tri-n-Octylmethylammonium Nitrate and Tri-n-Butyl Phosphate in Toluene},
journal = {Theoretical Foundations of Chemical Engineering},
year = {2021},
volume = {55},
publisher = {Pleiades Publishing},
month = {mar},
url = {https://doi.org/10.1134%2FS0040579521020111},
number = {2},
pages = {270--275},
doi = {10.1134/S0040579521020111}
}
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Stepanov, S. I., et al. “Chemistry of the Extraction of La(NO3)3 and Ce(NO3)3 from Nitrate Solutions with Mixtures of Tri-n-Octylmethylammonium Nitrate and Tri-n-Butyl Phosphate in Toluene.” Theoretical Foundations of Chemical Engineering, vol. 55, no. 2, Mar. 2021, pp. 270-275. https://doi.org/10.1134%2FS0040579521020111.
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