Also think about other allotropes of carbon like amorphous carbon.
Being sophisticated in some cases there are no Hydrogens for a combustion reaction to start so what happens during the calcination?
Dear Ardalan
In flow of N2 atmosphere a surfactant template like (n-Hexadecyltrimethylammonium bromide) undergoes decomposition process characterized by to peaks bleow and above 250C. These two peaks are indicative of the removal of the surfactant via Hofmann degradation reaction. There is no need for any addition fuel, there surfactant itself will do the job of degradation.
On important reference for Calcination behavior of different surfactant-templated mesostructured silica materials is indicated below.
Freddy Kleitz, Wolfgang Schmidt, Ferdi Schuth , Microporous and Mesoporous Materials 65 (2003) 1–29
@Kamal M.S. Khalil
Thanks Mr. Khalil for you attention and insight. being more detailed I specially meant organic templates that do not have any hydrogen though we know that surfactants as long as I know contain hydrogen. Is this route also applicable for carbon templates that do not have any hydrogen? for example for amorphous carbon.
The Hoffman degradation is
I am not sure to understand the question, but if you want to remove carbon there is indeed no other way but burning it, as carbon can never been dissolved. Another possibiity would be to etch it in hot concentrated nitric acid, but it might be difficult, long and incomplete process.
Alain
Dear Alain
you are right if there is some hydrogens with carbon so that it can be burnt. but what if there are no hydrogens?
For burning carbon, you don't need hydrogen : C + O2 --> CO2, or CO if the available amount of O2 is below stoichiometry (and most of times this happens with air as the source of O2).
Alain
Thanks dear Alain
very helpful. I pursued the hints and I found several ways that their core is the oxidation that you mentioned.
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