Materials, methods and techniques for the selective extraction of cerium from praseodymium chloride solutions
OwnerMuhammad Khair Khadri, Luke Darbyshire +2inventors
InventorsMuhammad Khair Khadri, Luke Darbyshire, Nurfarahiyah Abd Udzir, Ruslinda A Rahim
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Abstract
Praseodymium chloride solution depleted of cerium may be prepared by adjusting the pH of a high cerium-praseodymium chloride solution using praseodymium oxide, adding an oxidation agent comprising a hydrogen peroxide (H2O2) solution, to form a slurry mixture, filtering, and generating; a low cerium praseodymium chloride filtrate; and a praseodymium oxide solid containing cerium (IV) hydroxide; from the slurry mixture.
Claims20
A method for preparing a praseodymium chloride solution depleted of cerium, the method comprising:
- mixing a high cerium-praseodymium chloride solution with a pH adjustment agent comprising praseodymium oxide (Pr6O11), thereby generating a mixture;
- adding an oxidation agent to the mixture thereby generating a slurry comprising insoluble cerium (IV), the oxidation agent comprising hydrogen peroxide (H2O2);
- and
- filtering the slurry, thereby generating a depleted cerium-praseodymium chloride filtrate and a praseodymium oxide with cerium (IV) hydroxide solid.
A system for generating depleted cerium-praseodymium chloride solutions, the system comprising:
- a vessel in communication with a high cerium-praseodymium chloride solution source, a praseodymium oxide (Pr6O11) source, and a hydrogen peroxide (H2O2) source,
- the vessel comprising agitation apparatus;
- and
- a filter unit in fluid communication with the vessel.
Dependencies are inferred from the claim text.