Quantitative extraction of Rh(iii) using ionic liquids and its simple separation from Pd(ii) | Zendy

Lenka Švecová | Zendy; Nicolas Papaïconomou | Zendy; Isabelle Billard | Zendy

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Quantitative extraction of Rh(iii) using ionic liquids and its simple separation from Pd(ii)

Author(s) -

Lenka Švecová,

Nicolas Papaïconomou,

Isabelle Billard

Publication year - 2016

Publication title -

dalton transactions

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.98

H-Index - 184

eISSN - 1477-9234

pISSN - 1477-9226

DOI - 10.1039/c6dt02384c

Subject(s) - dicyanamide , ionic liquid , bromide , extraction (chemistry) , chemistry , chloride , ionic bonding , inorganic chemistry , nuclear chemistry , ion , chromatography , catalysis , organic chemistry

The extraction of Pd(ii) and Rh(iii) from acidic solutions containing between 1 and 8 M HCl towards three ionic liquids, namely [P 66614 ][Cl], [P 66614 ][Br] and [P 66614 ][DCA], based on the trihexyltetradecylphosphonium cation ([P 66614 ]) and chloride, bromide or dicyanamide (DCA) anions, respectively, is reported. Extraction of Pd(ii) is quantitative up to 6 M HCl (D > 3000). A value of 258 for the distribution coefficient of Rh(iii) extracted from 1 M HCl towards [P 66614 ][Br] is also reported. [P 66614 ][Cl] and [P 66614 ][Br] were found to be very efficient at separating these two metals from aqueous solutions containing at least 6 mol L -1 HCl.

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