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Extraction of natural radionuclides from aqueous solutions by novel maltolate-based task-specific ionic liquids.

Platzer S, Sap O, Leyma R, Wallner G, Jirsa F, Kandioller W, Krachler R, Keppler BK - J Radioanal Nucl Chem (2014)

Bottom Line: These two room temperature task-specific ionic liquids could be easily prepared by anion metathesis starting from commercially available materials.The isolated compounds were characterized by standard analytical methods.Uranium was totally extracted by both ionic liquids over a broad pH range (2-8), while the other radionuclides were removed with differing efficacies depending on the respective pH value.

View Article: PubMed Central - PubMed

Affiliation: Faculty of Chemistry, Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria.

ABSTRACT

Two novel maltol-based ionic liquids, namely [A336][Mal] and [C101][Mal], were synthesized as potential extracting agents for radionuclides from water. These two room temperature task-specific ionic liquids could be easily prepared by anion metathesis starting from commercially available materials. The isolated compounds were characterized by standard analytical methods. Their application as extraction agent for Unat., (234)Th, (210)Pb, (210)Bi, (210)Po and (226)Ra was elucidated by liquid-liquid extraction and scintillation counting. Uranium was totally extracted by both ionic liquids over a broad pH range (2-8), while the other radionuclides were removed with differing efficacies depending on the respective pH value.

No MeSH data available.


Synthetic scheme of ionic liquids [A336][Mal] and [C101][Mal]
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Fig2: Synthetic scheme of ionic liquids [A336][Mal] and [C101][Mal]

Mentions: Herein we report the synthesis of two new TSILs, tricaprylmethylammonium maltolate and tetradecyltrihexylphosphonium maltolate (Fig. 2) for the extraction of heavy metals from waste water. The presented compounds are the first step in the development of maltolato-based TSILs with optimized physicochemical parameters for the extraction of heavy metals. The respective maltolate salts were prepared by anion metathesis and characterized by standard analytical methods such as 1H and 13C NMR spectroscopy, IR and UV–vis spectroscopy. The total chloride content and the total organic carbon (TOC) values of these ionic liquids were determined. The extraction efficacies of two ionic liquids with regard to the naturally occurring radionuclides 238U and 234U, 234Th, 226Ra, 210Pb and its progenies 210Bi and 210Po were investigated.Fig. 2


Extraction of natural radionuclides from aqueous solutions by novel maltolate-based task-specific ionic liquids.

Platzer S, Sap O, Leyma R, Wallner G, Jirsa F, Kandioller W, Krachler R, Keppler BK - J Radioanal Nucl Chem (2014)

Synthetic scheme of ionic liquids [A336][Mal] and [C101][Mal]
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4514620&req=5

Fig2: Synthetic scheme of ionic liquids [A336][Mal] and [C101][Mal]
Mentions: Herein we report the synthesis of two new TSILs, tricaprylmethylammonium maltolate and tetradecyltrihexylphosphonium maltolate (Fig. 2) for the extraction of heavy metals from waste water. The presented compounds are the first step in the development of maltolato-based TSILs with optimized physicochemical parameters for the extraction of heavy metals. The respective maltolate salts were prepared by anion metathesis and characterized by standard analytical methods such as 1H and 13C NMR spectroscopy, IR and UV–vis spectroscopy. The total chloride content and the total organic carbon (TOC) values of these ionic liquids were determined. The extraction efficacies of two ionic liquids with regard to the naturally occurring radionuclides 238U and 234U, 234Th, 226Ra, 210Pb and its progenies 210Bi and 210Po were investigated.Fig. 2

Bottom Line: These two room temperature task-specific ionic liquids could be easily prepared by anion metathesis starting from commercially available materials.The isolated compounds were characterized by standard analytical methods.Uranium was totally extracted by both ionic liquids over a broad pH range (2-8), while the other radionuclides were removed with differing efficacies depending on the respective pH value.

View Article: PubMed Central - PubMed

Affiliation: Faculty of Chemistry, Institute of Inorganic Chemistry, University of Vienna, Waehringer Str. 42, 1090 Vienna, Austria.

ABSTRACT

Two novel maltol-based ionic liquids, namely [A336][Mal] and [C101][Mal], were synthesized as potential extracting agents for radionuclides from water. These two room temperature task-specific ionic liquids could be easily prepared by anion metathesis starting from commercially available materials. The isolated compounds were characterized by standard analytical methods. Their application as extraction agent for Unat., (234)Th, (210)Pb, (210)Bi, (210)Po and (226)Ra was elucidated by liquid-liquid extraction and scintillation counting. Uranium was totally extracted by both ionic liquids over a broad pH range (2-8), while the other radionuclides were removed with differing efficacies depending on the respective pH value.

No MeSH data available.