Patent ID: 6190428
Filing Date: 2001-02-20
Classification: C10L

Abstract:
A process for removing low-valent sulfur from carbon containing low-valent sulfur, comprising the steps of:placing carbon containing low-valent sulfur in an aqueous electrochemical cell, said electrochemical cell having a weak electrolyte solution of not greater than 0.05 molar wherein the said solution is selected from the group consisting of aqueous acid solutions, aqueous base solutions, and aqueous salt solutions, said electrochemical cell having a cathode a platinum anode;electrochemically forming platinum oxide by applying a potential of 1.0 volt versus a hydrogen reference electrode to a platinum electrode in said cell and bringing said carbon containing low-valent sulfur into contact with said platinum oxide, for a time sufficient to remove a desired amount of low-valent sulfur from said carbon.