Solvent Extraction of Non Ferrous Metal using Calix(6)Arene
Keywords:
Cobalt, spectrophotometer, calix(6)arene, pH, supermoleculeAbstract
Calix(6) arenes are macrocyclic polyethers and supermolecular compounds having three dimensional structure of 4-8 bridged phenolic units with varying annular space in which metals can be trapped due to ionic interaction. The beauty of calix(6) arenes is that it is cone shaped with varying annular space ranging from 1.0-2.4. There is good possibility to change the annular space by varying *n* i.e. number of phenyl rings attached to the structure by having conformation as 1,3 or 1,2 alternate favoring the stereochemistry for the formation of complexes with metal with varying coordination number. Cobalt(II) was extracted at varying pH. At the pH range of 7-8 maximum extraction of cobalt is found. A stock solution of cobalt was prepared by dissolving cobalt chloride in distill water. A UV-visible spectrophotometer and digital pH meter was used in the experiment. It was seen that among various diluents toluene shows better separation. Cobalt(II) complex, was stripped by using 0.05 M nitric acid. The above method is simple, selective, fast and useful.
References
Burusco Goñi KK, Cardiel J. “Methodological approach to conformational search”. Universitat Autònoma de Barcelona,; 2009.
Mathew VJ, Khopkar SM. “Hexaacetato calix (6) arene as the novel extractant for palladium”. Talanta, Vol.44, Issue.10, pp.1699-703, 1997.
A. J. Petrella and C. L. Raston, “Calixarenes as platforms for the construction of multimetallic complexes,” Journal of Organometallic Chemistry, vol. 689, no. 24, pp. 4125–4136, 2004.
C. D. Gutsche, “Calixarenes: An Introduction,” Royal Society of Chemistry Cambridge UK 2008.
S. Shinkai, H. Koreishi, K. Ueda, T. Arimura, and O. Manabe, “Molecular design of calixarene-based uranophiles which exhibit remarkably high stability and selectivity,” Journal of the American Chemical Society, Vol. 109, No. 21, pp. 6371–6376,Oct 2012.
Kanamathareddy, S.; Gutsche, C. D. “Approaches to poly metallated calixarene derivatives,” J. Am. Chem. Soc. 1993, 115,6572
Downloads
Published
How to Cite
Issue
Section
License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors contributing to this journal agree to publish their articles under the Creative Commons Attribution 4.0 International License, allowing third parties to share their work (copy, distribute, transmit) and to adapt it, under the condition that the authors are given credit and that in the event of reuse or distribution, the terms of this license are made clear.
