The invention relates to sulfonated aminomethylated chelate resins, to a method for producing same, to the use thereof for obtaining and purifying metals, in particular rare earth metals, from aqueous solutions and organic liquids, and for producing highly pure silicon.

This application discloses the method for separating element or isotopes such as protactinium and gallium and isotopes thereof from a corresponding mixture which method comprises contacting the mixture with a carbon-based separation material, wherein the carbon-based separation material selectively associates with the element or isotope thereof.

Methods of synthesizing colloidal ternary Group III-V nanocrystals are provided. Also provided are the colloidal ternary Group III-V nanocrystals made using the methods. In the methods, molten inorganic salts are used as high temperature solvents to carry out cation exchange reactions that convert binary nanocrystals into ternary nanocrystals.

The gallate solution is obtained from an alkaline gallium-containing solution. Gallium is sorbed from a recycled solution on a divinylbenzene polymer-based ionite, gallium is desorbed with a solution of sulfuric acid to obtain a gallium-containing eluate, followed by concentration of gallium by converting it to a solid phase by neutralisation of the eluate with a caustic solution with precipitation of a gallium hydroxide precipitate at a given temperature. Thickening and filtration of the precipitate are carried out with its further dissolution in a caustic solution until a given concentration of gallium in the solution is obtained. The method allows to increase the concentration of gallium by converting it to the solid phase when neutralising acidic eluates with an alkaline solution, which simplifies the concentration process and reduces the number of technological operations and, as a result, reduces the cost of gallium production.

Disclosed herein are methods preparing a purified, carrier-free 68Ga solution. Tire present disclosure also provides systems for preparing a purified, carrier-free 68Ga solution. The present disclosure also provides compositions comprising the purified, carrier-free 68Ga solutions disclosed herein. Also provided are methods of administering compositions of the present disclosure to a patient in need thereof, for example, for imaging a disease or disorder, such as cancer.

Methods of synthesizing colloidal ternary Group III-V nanocrystals are provided. Also provided are the colloidal ternary Group III-V nanocrystals made using the methods. In the methods, molten inorganic salts are used as high temperature solvents to carry out cation exchange reactions that convert binary nanocrystals into ternary nanocrystals.

Disclosed herein are methods preparing a purified, carrier-free 68Ga solution. Tire present disclosure also provides systems for preparing a purified, carrier-free 68Ga solution. The present disclosure also provides compositions comprising the purified, carrier-free 68Ga solutions disclosed herein. Also provided are methods of administering compositions of the present disclosure to a patient in need thereof, for example, for imaging a disease or disorder, such as cancer.

Methods of synthesizing colloidal ternary Group III-V nanocrystals are provided. Also provided are the colloidal ternary Group III-V nanocrystals made using the methods. In the methods, molten inorganic salts are used as high temperature solvents to carry out cation exchange reactions that convert binary nanocrystals into ternary nanocrystals.

A method for enhancing radionuclide activity of a daughter radionuclide-containing eluate obtained from a mixture of mother/daughter radionuclides is disclosed. This method comprises i) contacting separation particles with an aqueous solution containing a mixture of mother and daughter radionuclides wherein daughter radionuclides bind to separation particles and mother radionuclides does not. That contact is maintained ii) for a time for unbound daughter radionuclide to bind to the separation particles. Unbound mother radionuclide is iii) separated from the daughter radionuclide-bound separation particles using a washing solution. Steps i) and ii) are repeated at least once iv). The bound daughter radionuclide is stripped v) from the separation particles using a volume of stripping solution less than that used if only steps i), ii), iii) and v) were used for each of the recited at least two separations to form an aqueous eluate having enhanced daughter radionuclide activity.

The invention relates to sulfonated aminomethylated chelate resins, to a method for producing same, to the use thereof for obtaining and purifying metals, in particular rare earth metals, from aqueous solutions and organic liquids, and for producing highly pure silicon.