LIQUID - LIQUID EXTRACTION PROPERTIES OF 25,27-DICARBOXY-26,28-DIMETHOXY-5,n,173-TETRA-TERT-BUTYLCAUX[4JARENE TOWARDS THE ALKALI IONS.

1995 ◽  
Vol 13 (4) ◽  
pp. 755-769 ◽  
Author(s):  
J. SOEDARSONO ◽  
M. BURGARD ◽  
Z. ASFARI ◽  
J. VICENS
Keyword(s):  
Liquid Extraction ◽  
Alkali Ions ◽  
Liquid Liquid Extraction ◽  
Extraction Properties

Synthesis and Extraction Properties of 1,2-Bis(amidoxime) Derivatives

2002 ◽  
Vol 67 (2) ◽  
pp. 209-218 ◽  
Author(s):  
Ramazan Gup ◽  
H. Korkmaz Alpoguz ◽  
A. Dincer Beduk
Keyword(s):  
Transition Metals ◽  
Alkali Metals ◽  
Liquid Extraction ◽  
High Affinity ◽  
Liquid Liquid Extraction ◽  
Extraction Properties ◽  
Complexing Properties

Four 1,2-bis(amidoxime)s bearing benzoate groups were synthesized. Their complexing properties were studied by the liquid-liquid extraction of selected alkali (Na+ and K+) and transition metals (Hg2+, Cu2+, Pb2+ and Ni2+). It has been observed that all ligands show a high affinity to Cu2+ and Hg2+ ions, whereas almost no affinity to alkali metals.

Synthesis and Extraction Behaviour of Calix[4]arenes Partially Substituted at the Wide Rim by Carbamoylmethylphosphine Oxide (CMPO) Functions

2003 ◽  
Vol 56 (11) ◽  
pp. 1113 ◽  
Author(s):  
Françoise Arnaud-Neu ◽  
Silvia Barboso ◽  
Volker Böhmer ◽  
Frédéric Brisach ◽  
Laetitia Delmau ◽  
...  
Keyword(s):  
Single Crystal ◽  
Liquid Extraction ◽  
Hydrogen Atoms ◽  
Cone Conformation ◽  
X Ray ◽  
Liquid Liquid Extraction ◽  
Extraction Behaviour ◽  
Extraction Properties

Tetraethers of calix[4]arenes fixed in the cone conformation and substituted at their wide rim by one to three CMPO residues and hydrogen atoms or t-butyl moieties in the remaining position(s) were synthesized. Liquid/liquid extraction studies of selected lanthanides and actinides were undertaken with these calix[4]arenes, including also a linear trimer, in order to obtain a better understanding for the extraction properties of the corresponding calix[4]arene substituted by four CMPO functions. The structure of the 1,3-di-CMPO derivative was confirmed by single crystal X-ray analysis.

scholarly journals Assessment of ligand extraction properties: an intercomparison campaign amongst EUROPARTners

2008 ◽  
Vol 96 (4-5) ◽  
Author(s):  
Clement Hill ◽  
Jean-F. Desreux ◽  
Christian Ekberg ◽  
Amparo Glez Espartero ◽  
M. Galetta ◽  
...  
Keyword(s):  
Metal Cation ◽  
Cation Distribution ◽  
Liquid Extraction ◽  
The Third ◽  
Liquid Liquid Extraction ◽  
Trivalent Actinides ◽  
Extraction Properties ◽  
Integrated Project

An intercomparison campaign was organized at the beginning of the European FP6 EUROPART Integrated Project, among the partners involved in the assessment of the extracting properties of novel ligands, in order to check their accuracy and reliability when determining metal cation distribution ratios. Three different extracting systems, presenting various selectivity and affinity towards trivalent actinides were selected: (i) CMPO, (ii) TPTZ and (iii) BTP. Although some differences could be pointed out in the implementation of liquid–liquid extraction tests, the distribution ratios measured by the nine partners were fairly reproducible (<20% deviation) for the first two extracting systems. However, large discrepancies occurred when testing the third extracting system, due to its strong hydrolytic instability, thus pointing out the difficulty of assessing extraction properties of instable ligands.

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