Minimizing the aggregation of diglycolamide reverse micelles in the n-dodecane phase with bis-(2-ethylhexyl)phosphoric acid “reactive” phase modifier

2018 ◽  
Vol 42 (11) ◽  
pp. 8891-8899 ◽  
Author(s):  
K. Rama Swami ◽  
R. Kumaresan ◽  
K. A. Venkatesan ◽  
M. P. Antony
Keyword(s):  
Phosphoric Acid ◽  
Metal Ions ◽  
Phase Formation ◽  
Reverse Micelles ◽  
Trivalent Metal ◽  
Third Phase ◽  
Third Phase Formation ◽  
Trivalent Metal Ions

“Reactive“ phase modifiers enhance the extraction of trivalent metal ions through synergism and prevent third phase formation.

Probing the absence of third phase formation during the extraction of trivalent metal ions in an ionic liquid medium

2019 ◽  
Vol 43 (13) ◽  
pp. 5099-5108 ◽  
Author(s):  
Ch. Venkateswara Rao ◽  
Alok Rout ◽  
K. A. Venkatesan
Keyword(s):  
Ionic Liquid ◽  
Phase Formation ◽  
Acid Extraction ◽  
Trivalent Metal ◽  
Third Phase ◽  
Third Phase Formation ◽  
Trivalent Metal Ions ◽  
Nitric Acid Extraction ◽  
Molecular Diluents ◽  
Ionic Liquid Medium

In contrast to molecular diluents, diglycolamide (T2EHDGA) and carbamoylmethyl-phosphine oxide (CMPO) extractants diluted in an ionic liquid diluent minimize aggregation upon nitric acid extraction and prevent third phase formation during the course of solvent extraction.

Self-assembling properties of malonamide extractants used in separation processes

2008 ◽  
Vol 96 (4-5) ◽  
Author(s):  
Fabienne Testard ◽  
Pierre Bauduin ◽  
L. Martinet ◽  
B. Abécassis ◽  
L. Berthon ◽  
...  
Keyword(s):  
Phase Formation ◽  
Reverse Micelles ◽  
Microphase Separation ◽  
Attractive Potential ◽  
Separation Processes ◽  
Stability Range ◽  
Self Assembling ◽  
Third Phase ◽  
Third Phase Formation ◽  
The Stability

A review of the four microstructures present in oil phases of malonamide extractants used for nuclear fuel reprocessing is presented in relation with the extraction properties and the third phase formation. Due to their surface active properties, extractants can be considered as a weak surfactants and are organised into reverse micelles interacting through an attractive potential. The Van der Waals attractions between the cores of reverse micelles are the key parameters for understanding “third phase” formation. Extractant solutions are similar to reverse microemulsions and the stability rules known in the field of microemulsions can be applied. In some cases, micelles are transformed into a regular molecular solution by modest heating. Apart from micellar and regular solutions, two new modes of association of extractant molecules have been identified. Networks of H-bounds are obtained when “modifiers” such as octanol are added by formulators in order to improve stability range. Microphase separation in a more crystalline phase may be obtained by increasing extractant and/or ion concentrations.

Reactivity and Infrared Spectroscopy of Gaseous Hydrated Trivalent Metal Ions

2008 ◽  
Vol 130 (28) ◽  
pp. 9122-9128 ◽  
Author(s):  
Matthew F. Bush ◽  
Richard J. Saykally ◽  
Evan R. Williams
Keyword(s):  
Infrared Spectroscopy ◽  
Metal Ions ◽  
Trivalent Metal ◽  
Trivalent Metal Ions

ChemInform Abstract: Transesterification of a Phosphate Diester by Divalent and Trivalent Metal Ions.

ChemInform ◽  
2010 ◽  
Vol 23 (19) ◽  
pp. no-no
Author(s):  
J. R. MORROW ◽  
L. A. BUTTREY ◽  
K. A. BERBACK
Keyword(s):  
Metal Ions ◽  
Trivalent Metal ◽  
Phosphate Diester ◽  
Trivalent Metal Ions

SANS Study of Third Phase Formation in the Extraction of HCl by TBP Isomers inn‐Octane

2006 ◽  
Vol 41 (10) ◽  
pp. 2075-2095 ◽  
Author(s):  
R. Chiarizia ◽  
D. C. Stepinski ◽  
P. Thiyagarajan
Keyword(s):  
Phase Formation ◽  
Third Phase ◽  
Third Phase Formation
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