Purification of Metals
AssigneeMallinckrodt Inc.
InventorLuis Antonio Miguel Marques Barbosa
Life of this patent
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Abstract
A solid composition comprises: MnO2; and a compound represented by the general formula (I) wherein: R is a polymer; each Y is independently a hydrogen or a negative charge; Z is either hydrogen or is not present; each n is independently 1, 2, 3, 4, 5 or 6; wherein the MnO2 is bound to the compound of formula (I) so as to coat the surface thereof. Such a composition may be used for the separation of polyvalent metal species, such as Mo, from one or more accompanying impurities.
Claims23
An apparatus for separating a polyvalent metal species from one or more accompanying impurities comprising at least one vessel, the vessel having an inlet for the introduction of a solution containing the polyvalent metal species, and an outlet for the elution of components of the solution, the vessel being provided with a composition comprising:
- MnO2 and a compound of formula (I)
- wherein:
- R is a polymer;
- each Y is independently a hydrogen or a negative charge;
- Z is either hydrogen or is not present;
- each n is independently 1, 2, 3, 4, 5 or 6;
- and
- wherein at least 50% of the surface of the compound of Formula (I) is coated with MnO2.
A method for separating a polyvalent metal species from one or more accompanying impurities, comprising:
- (i) contacting the polyvalent metal species and accompanying impurities with a composition comprising MnO2 and a compound of formula (I):
- wherein:
- R is a polymer;
- each Y is independently a hydrogen or a negative charge;
- Z is either hydrogen or is not present;
- each n is independently 1, 2, 3, 4, 5 or 6;
- and
- wherein at least 50% of the surface of the compound of Formula (I) is coated with MnO2 such that the polyvalent metal binds to MnO2;
- (ii) dissolving the MnO2 bound to the polyvalent metal to form a solution;
- and
- (iii) contacting the solution with a complexing agent, such that the polyvalent metal binds to the compound of formula (I).
A method for separating Mo-99 from one or more accompanying impurities, comprising:
- (i) contacting the Mo-99 and the accompanying impurities with a composition comprising MnO2 and compound of formula (I)
- wherein:
- R is a polymer;
- each Y is independently a hydrogen or a negative charge;
- Z is either hydrogen or is not present;
- each n is independently 1, 2, 3, 4, 5 or 6;
- wherein at least 50% of the surface of the compounds of Formula (I) is coated with MnO2, such that Mo-99 binds to MnO2 and
- (ii) dissolving the MnO2 bound to the Mo-99 with an acid to form a solution;
- (iii) contacting the solution with a rhodanide complexing agent such that the Mo-99 binds to the compound of formula (I);
- and
- (iv) releasing the Mo-99 bound to the compound of formula (I) with a base.
A method for producing a MnO2-adsorbate, wherein the method comprises contacting a manganese salt;
- and
- a compound represented by the general formula (I)
- wherein:
- R is a polymer;
- each Y is independently a hydrogen or a negative charge;
- Z is either hydrogen or is not present;
- each n is independently 1, 2, 3, 4, 5 or 6;
- and
- wherein Formula (I) is coated with MnO2.
Dependencies are inferred from the claim text.