SEPARATIONS OF THE PLATINUM METALS BY ION EXCHANGE

1958 ◽  
Vol 36 (5) ◽  
pp. 835-844 ◽  
Author(s):  
S. S. Berman ◽  
W. A. E. McBryde
Keyword(s):  
Hydrochloric Acid ◽  
Ion Exchange ◽  
Anion Exchanger ◽  
Complete Recovery ◽  
Distribution Coefficients ◽  
Acid Solutions ◽  
Platinum Metals ◽  
Hydrochloric Acid Solutions

Distribution coefficients for the chlorides of ruthenium, rhodium, palladium, iridium(III and IV), and platinum have been determined between the anion exchanger Amberlite IRA-400 and hydrochloric acid solutions of various molarities. Separations of various combinations of rhodium, iridium, palladium, and platinum in amounts of 0.5 mg. or less are described. When, in the course of these separations, the four metals are present together, special procedures are required to ensure complete recovery of platinum.

Ion Exchange Recovery of Platinum(IV) from Hydrochloric Acid Solutions in the Presence of Silver(I)

2020 ◽  
Vol 94 (4) ◽  
pp. 828-834
Author(s):  
O. N. Kononova ◽  
E. V. Duba ◽  
A. S. Efimova ◽  
A. I. Ivanov ◽  
A. S. Krylov
Keyword(s):  
Hydrochloric Acid ◽  
Ion Exchange ◽  
Acid Solutions ◽  
Hydrochloric Acid Solutions

THE SEPARATION OF SMALL AMOUNTS OF THE PLATINUM METALS: 1. THE COLORIMETRIC DETERMINATION OF RHODIUM AND ITS SEPARATION FROM IRIDIUM

1961 ◽  
Vol 39 (12) ◽  
pp. 2389-2393 ◽  
Author(s):  
D. E. Ryan
Keyword(s):  
Hydrochloric Acid ◽  
Stannous Chloride ◽  
Colorimetric Determination ◽  
Acid Solutions ◽  
Platinum Metals ◽  
Hydrochloric Acid Solutions ◽  
Product Separation ◽  
Chromous Chloride ◽  
Made In

A method for separating small amounts of rhodium from iridium is described. In 3 to 9 M hydrochloric acid solutions, the amber-to-red complex of bivalent rhodium with 4,5-dimethyl-2-mercaptothiazole is formed after reduction of tervalent rhodium with chromous or stannous chloride. Rhodium is quantitatively separated from iridium by chloroform extraction of this product; separation can be made in solutions that have been fumed with sulphuric acid if chromous chloride is used for the prior reduction of the rhodium. The complex, after removal of the chloroform, is dissolved in dilute hydrochloric acid, and the optical density of the resulting colored solution is measured.

scholarly journals Ion exchange extraction of platinum(IV) and palladium(II) from hydrochloric acid solutions

2017 ◽  
Vol 90 (8) ◽  
pp. 1239-1245 ◽  
Author(s):  
O. N. Kononova ◽  
E. V. Duba ◽  
N. I. Shnaider ◽  
I. A. Pozdnyakov
Keyword(s):  
Hydrochloric Acid ◽  
Ion Exchange ◽  
Acid Solutions ◽  
Hydrochloric Acid Solutions ◽  
Exchange Extraction

Ion-Exchange Sorption of Palladium(II) from Hydrochloric Acid Solutions in the Presence of Silver(I)

2018 ◽  
Vol 92 (10) ◽  
pp. 2053-2059 ◽  
Author(s):  
O. N. Kononova ◽  
E. V. Duba ◽  
D. V. Medovikov ◽  
A. S. Krylov
Keyword(s):  
Hydrochloric Acid ◽  
Ion Exchange ◽  
Acid Solutions ◽  
Hydrochloric Acid Solutions
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