Synthesis of atomically dispersed M—N—C catalysts via selective metalation
AssigneeWisconsin Alumni Research Foundation
InventorsShannon Stahl, Jason Bates
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Abstract
A method of making an M-N—C catalyst is disclosed. The method includes the steps of (a) contacting an N-doped carbon support with a basic solution that includes a metal salt, whereby the N-doped carbon support is metalated by the metal cation of the metal salt to form one or more chelated metal-nitrogen complexes (MNx species); and (b) subsequently contacting the metalated N-doped carbon support with an acid, whereby the one or more MNx species formed on the N-doped carbon support in step (a) remain intact while other species are removed. The resulting composition may be catalytically activated by heat treating the composition. The activated catalyst may be used to catalyze a wide range of chemical reactions.
Claims12
A method of making an M-N—C catalyst, the method comprising:
- (a) contacting an N-doped carbon support comprising one or more macrocyclic N4 sites with a basic solution, the basic solution comprising a metal salt and a base is selected from the group consisting of trialkyl amine, alkali acetate, and any combination thereof, at a temperature from 30° C. to 250° C., whereby the N-doped carbon support is metalated by the metal cation of the metal salt to form a metalated N-doped carbon support comprising one or more chelated metal-nitrogen complexes;
- and
- (b) contacting the metalated N-doped carbon support with an acid at a temperature from 20° C. to 60° C., whereby the one or more chelated metal-nitrogen complexes formed on the N-doped carbon support in step (a) remain intact.
Dependencies are inferred from the claim text.