Back to results
US 11,517,832 B2Granted
System and method for removing transition metals from solution
AssigneeThe Research Foundation for The State University of New York
InventorsSteven Diver, Jonathan French
Life of this patent
Estimating the term…
Abstract
A metal sequestering material can be contacted with a reaction mixture of a metal-catalyzed reaction to remove transition metals or transition metal complexes. The reaction mixture contains transition metals and a reaction product in solution. These transition metals may be, for example, Pd, Ir, Ru, Rh, Pt, Au, or Hg. The concentration of transition metals in the reaction mixture is reduced to less than 100 ppm or even less than 10 ppm.
Claims16
A method for removing transition metals or transition metal complexes from a reaction mixture comprising:
- a) providing a reaction mixture of a metal-catalyzed reaction, the reaction mixture comprising transition metals and a reaction product in solution, wherein the transition metals are selected from the group consisting of a Group 8 element, a Group 9 element, a Group 10 element, and a Group 11 element;
- b) contacting a metal sequestering material with the reaction mixture, wherein the metal sequestering material comprises:
- i) a support, wherein the support is silica gel or an organic solid support;
- ii) a linker bound to the support;
- and
- iii) at least one isocyanide bound to the linker, wherein the isocyanide has a loading of 1.1 to 1.6 mmol/g;
- and
- c) separating the metal sequestering material from the reaction mixture,
- wherein a concentration of the transition metals in the reaction mixture after the separation of the metal sequestering material is reduced to less than 100 ppm.
6 more elements
Dependencies are inferred from the claim text.