METHOD OF USING AN ALUMINA IN A MOLYBDENUM/TECHNETIUM-99m GENERATOR
A Molybdenum/Technetium 99-m generator containing a metal-molybdate containing powder and an alumina sorbent. A preferred alumina sorbent is a gamma-phase alumina (γ-Al 2 O 3 ), a chi-phase alumina (χ-Al 2 O 3 ), or a combination thereof.
1 . A Molybdenum/Technetium 99-m generator comprising:
a metal-molybdate (Mo) containing powder; and
a guard filter comprising an alumina.
2 . The Molybdenum/Technetium 99-m generator according to claim 1 , wherein the alumina is selected from the group consisting of a gamma-phase aluminum oxide (γ-Al 2 O 3 ), a chi-phase aluminum oxide (χ-Al 2 O 3 ), and a combination thereof.
3 . The Molybdenum/Technetium 99-m generator according to claim 1 , wherein the guard filter further comprises a material selected from the group consisting of MSU-X mesoporous alumina, Polymeric Titania Compound (PTC), Polymer Embedded Nanocrystalline Titania, Polymeric Zirconia Compound (PZC), Tetragonal Nano Zirconia, chitosan-based products, iron, activated carbon, and a combination thereof.
4 . A Molybdenum/Technetium 99-m generator comprising:
a metal-molybdate containing powder; and
a gamma-phase aluminum oxide (γ-Al 2 O 3 ).
5 . The Molybdenum/Technetium 99-m generator according to claim 4 , wherein the Molybdenum/Technetium 99-m generator comprises a column.
6 . The Molybdenum/Technetium 99-m generator according to claim 5 , wherein the column comprises a Mo powder bed containing the metal-molybdate containing powder.
7 . The Molybdenum/Technetium 99-m generator according to claim 5 , wherein the column comprises a guard filter bed containing the gamma-phase aluminum oxide (γ-Al 2 O 3 ).
8 . The Molybdenum/Technetium 99-m generator according to claim 7 , wherein the guard filter bed further comprises a material selected from the group consisting of MSU-X mesoporous alumina, Polymeric Titania Compound (PTC), Polymer Embedded Nanocrystalline Titania, Polymeric Zirconia Compound (PZC), Tetragonal Nano Zirconia, chitosan-based products, iron, activated carbon, and a combination thereof.
9 . The Molybdenum/Technetium 99-m generator according to claim 7 , wherein the guard filter bed has a bed height (Length) and a column inner diameter (D) in a ratio of L/D in a range of 0.25 to 10.
10 . The Molybdenum/Technetium 99-m generator according to claim 4 , wherein a mass ratio of the gamma-phase aluminum oxide to the metal-molybdate powder (Al:P) is in a range of 0.025:1 to 5:1.
11 . A Molybdenum/Technetium 99-m generator comprising:
a metal-molybdate containing powder; and
a chi-phase aluminum oxide (χ-Al 2 O 3 ).
12 . The Molybdenum/Technetium 99-m generator according to claim 11 , wherein the Molybdenum/Technetium 99-m generator comprises a column.
13 . The Molybdenum/Technetium 99-m generator according to claim 12 , wherein the column comprises a Mo powder bed containing the metal-molybdate containing powder.
14 . The Molybdenum/Technetium 99-m generator according to claim 12 , wherein the column comprises a guard filter bed containing the chi-phase aluminum oxide (χ-Al 2 O 3 ).
15 . The Molybdenum/Technetium 99-m generator according to claim 14 , wherein the guard filter bed further comprises a material selected from the group consisting of MSU-X mesoporous alumina, Polymeric Titania Compound (PTC), Polymer Embedded Nanocrystalline Titania, Polymeric Zirconia Compound (PZC), Tetragonal Nano Zirconia, chitosan-based products, iron, activated carbon, and a combination thereof.
16 . The Molybdenum/Technetium 99-m generator according to claim 14 , wherein the guard filter bed has a bed height (Length) and a column inner diameter (D) in a ratio of L/D in a range of 0.25 to 10.
17 . The Molybdenum/Technetium 99-m generator according to claim 11 , wherein a mass ratio of the chi-phase aluminum oxide to the metal-molybdate powder (Al:P) is in a range of 0.025:1 to 5:1.
18 . A method of using, the method comprising:
introducing a guard filter comprising an alumina selected from the group consisting of γ-Al 2 O 3 , χ-Al 2 O 3 , and a combination thereof into a Molybdenum/Technetium 99-m generator, the Molybdenum/Technetium 99-m generator comprising a metal-molybdate (Mo) containing powder.
19 . The method of using according to claim 18 , wherein the guard filter further comprises a material selected from the group consisting of MSU-X mesoporous alumina, Polymeric Titania Compound (PTC), Polymer Embedded Nanocrystalline Titania, Polymeric Zirconia Compound (PZC), Tetragonal Nano Zirconia, chitosan-based products, iron, activated carbon, and a combination thereof.
20 . The method of using according to claim 18 , wherein the guard filter has a pH in a range of 3.5 to 7.5.