Method of producing coupled radical products via desulfoxylation
View Patent ↗A method that produces coupled radical products. The method involves obtaining a sodium salt of a sulfonic acid (R—SO 3 —Na). The alkali metal salt is then used in an anolyte as part of an electrolytic cell. The electrolytic cell may include an alkali ion conducting membrane (such as a NaSICON membrane). When the cell is operated, the alkali metal salt of the sulfonic acid desulfoxylates and forms radicals. Such radicals are then bonded to other radicals, thereby producing a coupled radical product such as a hydrocarbon. The produced hydrocarbon may be, for example, saturated, unsaturated, branched, or unbranched, depending upon the starting material.
1. A method for producing a coupled radical product comprising:
obtaining a sodium salt of an alkyl sulfonic acid;
preparing an anolyte for use in an electrolytic cell, the electrolytic cell comprising an anolyte compartment, a catholyte compartment, and a NaSICON membrane that separates the anolyte compartment from the catholyte compartment, wherein the anolyte is housed within the anolyte compartment and a catholyte is housed within the catholyte compartment, wherein the anolyte comprises a first solvent or mixture of solvents and a quantity of the sodium salt of the alkyl sulfonic acid; and
electrolyzing the anolyte within the cell to desulfoxylate the sodium salt of the alkyl sulfonic acid to convert the sodium salt of the alkyl sulfonic acid into one or more alkyl radicals that react to form a coupled radical product.
2. A method as in claim 1 , wherein the sodium salt of the alkyl sulfonic acid is derived from biomass.
3. A method as in claim 2 , wherein the coupled radical product comprises a hydrocarbon.
4. The method of claim 1 , wherein the sodium salt of the alkyl sulfonic acid comprises CH 3 —SO 3 —Na.
5. The method of claim 4 , wherein electrolyzing the anolyte within the cell to desulfoxylate the sodium salt of the alkyl sulfonic acid comprises desulfoxylating the CH 3 —SO 3 —Na to convert the CH 3 —SO 3 —Na into the one or more alkyl radicals that react to form the coupled radical product.
6. The method of claim 5 , wherein the alkyl radicals comprise methyl radicals.
7. The method of claim 1 , wherein the anolyte further comprises H—SO 3 —Na.
8. The method of claim 7 , wherein electrolyzing the anolyte further comprises desulfoxylating the H—SO 3 —Na to convert the H—SO 3 —Na into one or more hydrogen radicals that react to form a coupled radical product.
9. The method as in claim 1 , further comprising feeding hydrogen gas into the anolyte compartment and photolysing the hydrogen gas to form one or more hydrogen radicals.