Purification of metals
View Patent ↗A solid composition comprises: MnO 2 ; 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 MnO 2 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.
1. 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 solid composition comprising:
MnO 2 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 MnO 2 .
2. The apparatus of claim 1 , wherein the vessel is in the form of a column.
3. The apparatus of claim 1 , wherein the apparatus comprises two vessels in the form of a first column and a second column, wherein the first column is connected to the second column so that an eluate from the first column enters the second column.
4. The apparatus of claim 3 , wherein the solid composition of the first column is a particulate, the particulate comprising particles having a size of about 100 to about 200 mesh.
5. The apparatus of claim 3 , wherein the solid composition of the first column is a particulate, the particulate comprising particles having a size of about 100 to about 200 mesh and the solid composition of the second column is a particulate, the particulate comprising particles having a size of about 200 to about 400 mesh.
6. The apparatus of claim 1 , wherein the inlet is configured downstream from a radioisotope generation facility.
7. The apparatus of claim 6 , wherein the radioisotope generation facility is a Mo-99 radioisotope generation facility.
8. The apparatus of claim 1 , wherein the outlet is connected to a collection vessel.
9. The apparatus of claim 1 , wherein the outlet is connected to a further purification apparatus.
10. The apparatus of claim 1 , wherein R is a copolymer.
11. The apparatus of claim 1 , wherein R is a copolymer of styrene and divinylbenzene or derivatives thereof.
12. The apparatus of claim 1 , wherein R is a crosslinked polystyrene.
13. The apparatus of claim 1 , wherein the solid composition of the vessel is a particulate, the particulate comprising particles of between about 0.1 mm and 0.5 mm in size.
14. The apparatus of claim 1 , wherein the polyvalent metal species is Mo.
15. The apparatus of claim 1 , wherein the polyvalent metal species is a radioactive isotope.
16. The apparatus of claim 1 , wherein the polyvalent metal species is Mo-99.
17. The apparatus of claim 1 , wherein R is chosen from a copolymer of styrene and divinylbenzene and a crosslinked polysterene and n is equal to 1.
18. A solid composition comprising MnO 2 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 MnO 2 .
19. The composition of claim 18 , wherein R is a copolymer.
20. The composition of claim 18 , wherein R is a copolymer of styrene and divinylbenzene or derivatives thereof.
21. The composition of claim 18 , wherein R is a crosslinked polystyrene.
22. The composition of claim 18 , wherein at least 60% of the surface of the compound of Formula (I) is coated with MnO 2 .
23. The composition of claim 18 , wherein at least 75% of the surface of the compound of Formula (I) is coated with MnO 2 .
24. The composition of claim 18 , wherein at least 90% of the surface of the compound of Formula (I) is coated with MnO 2 .
25. The composition of claim 18 , wherein R is chosen from a copolymer of styrene and divinylbenzene and a crosslinked polystyrene, n is equal to 1, and at least 90% of the surface of the compound of Formula (I) is coated with MnO 2 ; and wherein the composition is a particulate comprising particles of between about 0.1 mm and 0.5 mm in size.