The synergistic solvent extraction of manganese by macrocyclic crown ethers in combination with didodecylnaphthalene sulfonic acid: Effect of macrocycle substituents
Conference
·
OSTI ID:5815647
Crown ethers in combination with organophilic cation exchangers synergize the extraction of certain metal ions from aqueous solutions, and their selectivity has been thought largely dependent on the correspondence between the crown other's cavity diameter and the metal ion diameter. This work focuses on two crown others, tert. -butylbenzo-15-crown-5 (LBB15C5) and tert.-butylcyclohexano-15 -crown-5 (LBC15C5), each of which has a cavity diameter of 1.7 to 2.2 x 10/sup -10/ m and their extraction of Mn/sup 2 +/ (ionic diameter 1.4 to 2.2 x 10/sup -10/ m) from aqueous nitrate solutions. The organophilic cation exchanger used was didodecylnaphthalene sulfonic acid (HDDNS). The data show no observable complexes of the manganese salt of HDDNS with the benzo-substituted crown, tBB15C5, but the cyclohexano-substituted crown, LBC15C5, forms a strong complex with Mn(DDNS)/sub 2/. The system LBC15C5/HDDNS is an effective phase-transfer agent for manganese. Since the cavities in the two crown others are the same size, it appears that the difference observed between the benzo- and cyclohexano-subsitituted crowns are due to their different substituents. 23 refs., 6 figs.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5815647
- Report Number(s):
- CONF-871038-6; ON: DE88002299
- Country of Publication:
- United States
- Language:
- English
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Synergistic solvent extraction of manganese by macrocyclic crown ethers in combination with didodecylnaphthalene sulfonic acid: effect of macrocycle substituents
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Selective extraction of Cu/sup 2 +/ and Ag/sup +/ ions from sulfuric acid by synergistic combinations of tetradentate thia macrocycles with didodecylnaphthalene sulfonic acid
Conference
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Sat Oct 01 04:00:00 UTC 1988
· Sep. Sci. Technol.; (United States)
·
OSTI ID:6223444
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Journal Article
·
Fri Oct 01 04:00:00 UTC 1993
· Solvent Extraction and Ion Exchange
·
OSTI ID:171536
Selective extraction of Cu/sup 2 +/ and Ag/sup +/ ions from sulfuric acid by synergistic combinations of tetradentate thia macrocycles with didodecylnaphthalene sulfonic acid
Conference
·
Sat Oct 01 04:00:00 UTC 1988
· Sep. Sci. Technol.; (United States)
·
OSTI ID:6256408
Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ALCOHOLS
AQUEOUS SOLUTIONS
COMPLEXES
DISPERSIONS
ELEMENTS
EXTRACTION
GLYCOLS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INORGANIC ACIDS
ION EXCHANGE MATERIALS
MANGANESE
MANGANESE COMPLEXES
MATERIALS
METALS
MIXTURES
NITRIC ACID
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC ION EXCHANGERS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
POLYETHYLENE GLYCOLS
POLYMERS
SEPARATION PROCESSES
SOLUTIONS
SOLVENT EXTRACTION
SOLVENT PROPERTIES
SULFONIC ACIDS
SYNERGISM
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS
400105* -- Separation Procedures
ALCOHOLS
AQUEOUS SOLUTIONS
COMPLEXES
DISPERSIONS
ELEMENTS
EXTRACTION
GLYCOLS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INORGANIC ACIDS
ION EXCHANGE MATERIALS
MANGANESE
MANGANESE COMPLEXES
MATERIALS
METALS
MIXTURES
NITRIC ACID
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC ION EXCHANGERS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
POLYETHYLENE GLYCOLS
POLYMERS
SEPARATION PROCESSES
SOLUTIONS
SOLVENT EXTRACTION
SOLVENT PROPERTIES
SULFONIC ACIDS
SYNERGISM
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS