Separation of fission products in a molten salt reactor via adsorbent frameworks

1 . A system comprising:

a molten salt reactor system comprising a molten salt, a reactor core, and an extraction system;

the extraction system coupled to the molten salt reactor system and configured to receive a flow of molten salt comprising fission products produced in the reactor core;

an absorbent framework extending from the extraction system into the molten salt by an attachment rod;

wherein the attachment rod is configured to facilitate removal of the absorbent framework from the molten salt;

wherein the absorbent framework comprises a temperature resistant cartridge configured to house an absorbent composition and enable flow of the molten salt therethrough;

wherein the absorbent composition is configured to capture fission products from the molten salt by binding to the fission products via intermolecular force interaction between the absorbent composition and the fission products;

wherein the absorbent composition is a metal-organic framework; and

wherein the metal-organic framework is doped with sulfur or tungsten.

2 . The system of claim 1 , wherein the intermolecular forces comprise one or more force interactions between the metal-organic framework and the fission products comprising ion-ion interaction, Van der Waals forces, dipole-dipole forces, ion-dipole interactions, and/or hydrogen bonding.

3 . The system of claim 1 , wherein the absorbent composition comprises carbon-nanotubes comprising binding sites with an affinity to fission products.

4 . The system of claim 1 , wherein the absorbent composition comprises microspheres formed or coated with a material having an affinity to fission products.

5 . The system of claim 1 , wherein the metal-organic framework compound is a porous structure with a plurality of pores of a size to allow the fission products to penetrate the metal-organic framework compound; and

wherein the metal-organic framework compound is configured to have an affinity to the fission products by having an electrostatic charge opposite to that of the fission products.

6 . The system of claim 1 , wherein the metal-organic framework is temperature and corrosion resistant.

7 . The system of claim 1 , wherein the metal-organic framework compound comprises UiO-66, ZIF-4, or ZIF-8.

8 . The system of claim 7 , wherein the metal-organic framework is UiO-66 configured to be resistant to temperatures of at least 600° C.

9 . The system of claim 7 , wherein the UiO-66 has a crystal structure and is synthesized using thermal solvolysis.

10 . The system of claim 7 , wherein the UiO-66 has an amorphous glass structure and is synthesized using vapor diffusion.

11 . The system of claim 8 , wherein the UiO-66 has an amorphous powder structure and is synthesized using sonication.

12 . The system of claim 1 , wherein the metal-organic framework is bound to a temperature resistant substrate via sonication.

13 . The system of claim 12 , wherein the temperature resistant substrate is selected from a group consisting of a metal mesh wire frame, graphene, copper wire, nickel sponge, and graphite.

14 . The system of claim 1 , wherein the molten salt is LiF-BeF 2 -UF 4 and the fission products comprise molybdenum-99.

15 . The system of claim 1 , wherein the extraction system is a bypass coupled to a molten salt loop including a bypass valve operable to selectively facilitate flow of the molten salt to the extraction system.

16 . The system of claim 15 , wherein the molten salt loop is configured to facilitate circulation of the molten salt comprising fissile material through the reactor core of the molten salt reactor system; and

wherein the reactor core is operable to facilitate fission reaction of the fissile material thereby producing fission products within the molten salt.

17 . A system comprising:

a molten salt reactor system comprising a molten salt, a reactor core, and an extraction system;

the extraction system coupled to the molten salt reactor system and configured to receive a flow of molten salt comprising fission products produced in the reactor core;

an absorbent framework extending from the extraction system into the molten salt by an attachment rod;

wherein the attachment rod is configured to facilitate removal of the absorbent framework from the molten salt;

wherein the absorbent framework comprises a temperature resistant cartridge configured to house an absorbent composition and enable flow of the molten salt therethrough;

wherein the absorbent composition is configured to capture fission products from the molten salt by binding to the fission products via intermolecular force interaction between the absorbent composition and the fission products;

wherein the absorbent composition is a metal-organic framework compound; and

wherein the metal-organic framework compound comprises ZIF-4, or ZIF-8.

18 . A system comprising:

a molten salt reactor system comprising a molten salt, a reactor core, and an extraction system;

the extraction system coupled to the molten salt reactor system and configured to receive a flow of molten salt comprising fission products produced in the reactor core;

an absorbent framework extending from the extraction system into the molten salt by an attachment rod;

wherein the attachment rod is configured to facilitate removal of the absorbent framework from the molten salt;

wherein the absorbent framework comprises a temperature resistant cartridge configured to house an absorbent composition and enable flow of the molten salt therethrough;

wherein the absorbent composition is configured to absorb and/or adsorb fission products from the molten salt;

wherein the absorbent composition is a metal-organic framework; and

wherein the metal-organic framework is doped with sulfur or tungsten.