When we make active carbon with calcination method, we usually make the temperature as high as 600 degree C or higher. The carbon backbone structure maintained as a result. But why doesn't the C-C bond break up although in the atmosphere of nitrogen?
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Interesting question..
The presence of iron promotes the oxidation of the activated carbon surface, increasing the amount of oxygen surface groups, mainly carboxylic acid, anhydride and lactone groups. On the other hand, the calcination step modifies the distribution of these groups, increasing the amount of lactone groups and reducing the pHslurry. Within the temperature range studied, the calcination temperature does not affect to the porous structure. The changes observed in the catalyst surface led to an increase of the catalytic activity as a consequence of a higher H2O2 decomposition into OH radicals, probably due to a better dispersion of the active phase. Neither oxygen surface groups by themselves nor pHslurry seemed to have influence on the catalytic activity. Source ; Catalysis Today, Volume 143, Issues 3–4, 30 May 2009, Pages 341-346
If you calcine in oxygen (or air), carbon will decompose and form CO2. N2 is considered an inert gas
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