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Extraction of inorganic metal salts from alkaline solution by crown ethers

  • Inorganic Chemistry
  • Published:
Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Conclusions

  1. 1.

    Solutions of crown ether DCH18C6 in chloroform and 1,1,2,2-tetrachloroethane efficiently extract metal nitrates (M=K, Rb, Cs, Sr, Ba) from aqueous alkaline solution with 0.5 to 4.0 M hydroxide ion in the presence of 1 to 10 mg/ml of LiNO3 as salting-out agent.

  2. 2.

    In the extraction of nitrates from alkaline solution the sequence of cation extractibility changes in the alkali-metal series: K > Rb > Cs ≈ Na > Li; and in the alkaline-earth series: Sr > Ba > Ca > Mg. This sequence can be used for efficient intragroup separation of these metals.

  3. 3.

    In the extraction of potassium salts by DCH18C6 the extractibility of the anions increases in the sequence SO4 2− < Cl− ≪< Br− < I− < NO[in3], and is determined by the change in anion hydration.

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Authors and Affiliations

  1. V. I. Vernadskii Institute of Geochemistry and Analytical Chemistry, Academy of Sciences of the USSR, Moscow

    V. V. Yakshin, A. T. Fedorova & B. M. Laskorin

  2. All-Union Scientific-Research Institute of Chemical Technology, Moscow

    V. V. Yakshin, A. T. Fedorova & B. M. Laskorin

Authors
  1. V. V. Yakshin
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  2. A. T. Fedorova
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  3. B. M. Laskorin
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Additional information

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 509–514, March, 1986.

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Yakshin, V.V., Fedorova, A.T. & Laskorin, B.M. Extraction of inorganic metal salts from alkaline solution by crown ethers. Russ Chem Bull 35, 463–467 (1986). https://doi.org/10.1007/BF00953204

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  • DOI: https://doi.org/10.1007/BF00953204

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