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A multi-faceted approach to probe organic phase composition in TODGA systems with 1-alcohol phase modifiers.

作者信息

Peroutka Allison A, Galley Shane S, Shafer Jenifer C

机构信息

Department of Chemistry, Colorado School of Mines Golden CO USA

出版信息

RSC Adv. 2023 Feb 20;13(9):6017-6026. doi: 10.1039/d2ra07786h. eCollection 2023 Feb 14.

DOI:10.1039/d2ra07786h
PMID:36814872
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9939940/
Abstract

The effect of varying 1-alcohol alkyl chain length on extraction of lanthanides (Lns), HO, and H was studied with tetraoctyl diglycolamide (TODGA) solvent extraction coupled with FT-IR investigations. This multi-faceted approach provided understanding regarding the relationship between extracted Lns, HO and H, 1-alcohol volume fraction, and 1-alcohol alkyl chain length. Under acidic conditions there is competition with 1-alcohols and their ability to solubilize aggregates and incidentally induce third phase formation by increasing the extraction of HO. At low 1-alcohol concentrations (5 vol%), the trend for 1-alcohol alkyl lengths in solubilizing the aggregates is 1-hexanol > 1-octanol > 1-decanol. Shorter alkyl chains suppress aggregation, ultimately resulting in lower HO concentrations and less available TODGA to hydrogen bond with H. Increasing the 1-alcohol concentration to 30 vol% results in the opposite trend, with longer alkyl chains suppressing aggregation. These results suggest this approach is effective at probing trends in the organic phase micro-structure, and indicates trends across the Ln period with various 1-alcohol alkyl chain lengths are a function of outer-sphere coordination.

摘要
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3564/9939940/772c3fff49c2/d2ra07786h-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3564/9939940/a9ba05b0eb3f/d2ra07786h-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3564/9939940/d7ff5f7a6ef1/d2ra07786h-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3564/9939940/17885d24fd89/d2ra07786h-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3564/9939940/fa5d4fb837e5/d2ra07786h-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3564/9939940/772c3fff49c2/d2ra07786h-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3564/9939940/a9ba05b0eb3f/d2ra07786h-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3564/9939940/d7ff5f7a6ef1/d2ra07786h-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3564/9939940/17885d24fd89/d2ra07786h-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3564/9939940/fa5d4fb837e5/d2ra07786h-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3564/9939940/772c3fff49c2/d2ra07786h-f5.jpg

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本文引用的文献

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2
Molecular Forces in Liquid-Liquid Extraction.液-液萃取中的分子作用力。
Langmuir. 2021 Sep 14;37(36):10637-10656. doi: 10.1021/acs.langmuir.1c00673. Epub 2021 Jul 12.
3
Structure Activity Relationship Approach toward the Improved Separation of Rare-Earth Elements Using Diglycolamides.
采用二甘醇酰胺的结构活性关系方法改进稀土元素的分离。
Inorg Chem. 2020 Dec 7;59(23):17620-17630. doi: 10.1021/acs.inorgchem.0c02861. Epub 2020 Nov 13.
4
Outer-Sphere Water Clusters Tune the Lanthanide Selectivity of Diglycolamides.外层水簇调节二甘醇酰胺对镧系元素的选择性。
ACS Cent Sci. 2018 Jun 27;4(6):739-747. doi: 10.1021/acscentsci.8b00223. Epub 2018 Jun 14.
5
Trefoil-Shaped Outer-Sphere Ion Clusters Mediate Lanthanide(III) Ion Transport with Diglycolamide Ligands.三叶型外球离子簇介导双甘醇酰胺配体传输镧系（III）离子。
J Am Chem Soc. 2017 Dec 6;139(48):17350-17358. doi: 10.1021/jacs.7b07318. Epub 2017 Nov 14.
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"Straining" to Separate the Rare Earths: How the Lanthanide Contraction Impacts Chelation by Diglycolamide Ligands.“费力地”分离稀土元素：镧系收缩如何影响二甘醇酰胺配体的螯合作用
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