SEPARATION OF PALLADIUM(II) FROM PLATINUM(II), IRIDIUM(III), AND RHODIUM(III) USING CENTRIFUGAL PARTITION CHROMATOGRAPHY
作者:
Y. Surakitbanharn,
S. Muralidharan,
H. Freiser,
期刊:
Solvent Extraction and Ion Exchange
(Taylor Available online 1991)
卷期:
Volume 9,
issue 1
页码: 45-59
ISSN:0736-6299
年代: 1991
DOI:10.1080/07366299108918041
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The separation of Pd(II) from Pt(II), Ir(III) and Rh(III) with trioctylphosphine oxide (TOPO) in heptane using centrifugal partition chromatography (CPC) has been investigated for the first time. The extraction of Pd(II) has been studied by CPC and batch solvent extraction. The distribution ratios for Pd(II) determined by both methods agree well. In low HCl concentrations (<0.1 M), the extracted species was PdCl2.(TOPO)2, irrespective of the chloride concentration, while at acid concentrations above 0.1 M, the Pd was extracted as the ion pair, 2(TOPO.H+).PdCl42-. Base line separation of Pd(II) and Pt(II) in CPC was obtained under a variety of chloride and HCl concentration with the average number of theoretical plates being 390 ± 40 at a flow rate of 0.47 ± 0.05 mL/min.
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