Active carbon conditioning process
AssigneeDiamond Shamrock Corporation
InventorFrank Solomon
Life of this patent
Estimating the term…
Abstract
An improved process for making an oxygen cathode having a carbon supported hydroxide forming catalyst, wherein, prior to placement of catalyst on the carbon, active carbon particles are contacted with an alkali and then contacted with an acid. The alkali contacting step is conducted at temperatures ranging from 90.degree.-140.degree. C. for a time period of at least 0.5 hours.
Claims7
In a process for making an oxygen cathode having a carbon supported hydroxide forming catalyst the improvement comprising treating active carbon particles by contacting said active carbon particles with an alkali and thereafter contacting said active carbon particles with an acid, said contacting with alkali being conducted at temperatures ranging from about 90.degree. to 140.degree. C. for a time period of at least about 0.5 hours, said contacting steps occurring prior to placement of any catalyst on the carbon.
Dependencies are inferred from the claim text.