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Extraction Equilibria in the Co,Ni(SCN)2– Na,NH4SCN–Aliquat 336, Ethyl Acetate System

Extraktionsgleichgewichte im System Co,Ni(SCN)2–Na,NH4SCN–Aliquat 336, Ethylacetat

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Summary.

 The extraction behaviour of Co and Ni thiocyanates in combination with methyltrioctylammonium thiocyanate is reported. The Co complexes Co(ASCN)2(SCN)2 and HCo(ASCN)2(SCN)3 and the Ni species Ni(ASCN)(SCN)2 and Ni(ASCN)4(SCN)2 were found in the organic phase. The separation factors of Co/Ni are in the range of 103–104. The extraction of NaSCN, NH4SCN, and H2SO4 into ethyl acetate is described for the first time.

Zusammenfassung.

 Das Extraktionsverhalten von Kobalt- und Nickelthiocyanat im Zusammenhang mit Methyltrioctylammoniumthiocyanat wird beschrieben. In der organischen Phase wurden die Kobaltkomplexe Co(ASCN)2(SCN)2 und HCo(ASCN)2(SCN)3 sowie die Nickelkomplexe Ni(ASCN)(SNC)2 und Ni(ASCN)4(SCN)2 gefunden. Die Co/Ni-Trennfaktoren liegen im Bereich von 103 bis 104. Zum ersten Mal wird über die Extraktion von NaSCN, NH4SCN und H2SO4 in die Ethylacetat-Phase berichtet.

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Authors and Affiliations

  1. Faculty of Chemistry, Maria Curie-Skłodowska University, PL-20031 Lublin, Poland, PL

    Marek Majdan & Paweł Sadowski

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  1. Marek Majdan
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  2. Paweł Sadowski
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Received September 19, 1997. Accepted (revised) November 10, 1997

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Majdan, M., Sadowski, P. Extraction Equilibria in the Co,Ni(SCN)2– Na,NH4SCN–Aliquat 336, Ethyl Acetate System. Monatshefte fuer Chemie 129, 607–615 (1998). https://doi.org/10.1007/PL00013468

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  • DOI: https://doi.org/10.1007/PL00013468

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