Al-Bazi S J, Chow A
Department of Chemistry, University of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2.
Talanta. 1984 Mar;31(3):189-93. doi: 10.1016/0039-9140(84)80048-x.
Conditions for the formation and extraction of the thiocyanate complex of ruthenium are reported. Distribution coefficients of more than 10(4) and a capacity of about 0.24 mole per kg of foam were obtained. The effect of the chloride salts of various univalent cations on the extraction of Ru(SCN)(6)(3-) indicated that the efficiency of ruthenium extraction depends on how well the cation fits into the polyether segment of the polyurethane foam, which agrees with the "cation-chelation" mechanism. The separation of ruthenium and rhodium indicated that more than 95% of the rhodium remained in the aqueous phase and about 95% of the ruthenium was retained by the polyurethane foam and could be easily recovered.
报道了钌硫氰酸盐配合物的形成和萃取条件。获得了大于10⁴的分配系数和约每千克泡沫0.24摩尔的容量。各种单价阳离子的氯化物盐对Ru(SCN)₆³⁻萃取的影响表明，钌的萃取效率取决于阳离子与聚氨酯泡沫聚醚段的适配程度，这与“阳离子螯合”机制相符。钌和铑的分离表明，超过95%的铑留在水相中，约95%的钌被聚氨酯泡沫保留且易于回收。
