| prov:value
| - To accomplish the removal of surface oxides, a treatment sequence is followed which comprises subjecting the carbon material to an oxidizing agent, such as nitric acid, CrO3, H2 O2, hypochlorite and the like, or an oxidant gas, such as H2 O, H2 O/NH3, CO2, NOx, air, etc. and then pyrolyzing it in an oxygen-free atmosphere at a temperature in the range of about 500??? C. to 1500??? C.
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