US 11,668,013 B2
Controlled electrochemical oxidation of Pt(II) ions for continuous methane-to-methanol conversion
Yogesh Surendranath, Cambridge, MA (US); and R. Soyoung Kim, Cambridge, MA (US)
Assigned to Massachusetts Institute of Technology, Cambridge, MA (US)
Filed by Massachusetts Institute of Technology, Cambridge, MA (US)
Filed on Mar. 16, 2020, as Appl. No. 16/820,266.
Claims priority of provisional application 62/819,046, filed on Mar. 15, 2019.
Prior Publication US 2020/0291535 A1, Sep. 17, 2020
Int. Cl. C25B 3/07 (2021.01); C25B 3/23 (2021.01); C25B 9/15 (2021.01); C25B 15/08 (2006.01); C25B 15/029 (2021.01); C25B 11/04 (2021.01); B01J 27/13 (2006.01); C25B 11/02 (2021.01); C25B 15/02 (2021.01); C07C 31/04 (2006.01)
CPC C25B 3/23 (2021.01) [B01J 27/13 (2013.01); C25B 11/02 (2013.01); C25B 11/04 (2013.01); C25B 15/02 (2013.01); C25B 15/08 (2013.01); C07C 31/04 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A process for oxidizing a compound, comprising:
(i) providing a reaction mixture, comprising water, a PtII species at an initial concentration, a compound of formula R1-R2, an anion, and a Bronsted acid;
(ii) applying an electrical current to the reaction mixture at a temperature, thereby oxidizing the compound of formula R1-R2;
(iii) measuring a reaction concentration of the PtII species in the reaction mixture; and
(iv) modulating the electrical current in situ to maintain the reaction concentration of the PtII species during the process at about 95% to about 105% of the initial concentration;
wherein
the anion is chloride, fluoride, bromide, iodide, a carboxylate, nitrate, perchlorate, phosphate, or sulfate;
the initial concentration of PtII species is about 1 mM to about 10 M;
R1 is C1-C20 alkyl, C3-C12 cycloalkyl, C5-C10 heterocyclyl, C6-C12 aryl, or C5-C12 heteroaryl; and
R2 is H, —OH, —C(═O)H, or —C(═O)OH.