Please give me the procedure to make porous graphite from solid graphite. Thanks in advance.
Regards,
-Jayesh
Chemically, you can try to react it with aqua regia solution for various time. Physically, you can heating it at close to its melting point.
Thanks sir,
Can you please check attached link, page no 10. they have showed that at 2500K, structure is more uniform. May I treat at this temp ? Please suggest.
Thanking you,
Regards,
- Jayesh
Which kind of porosity do you want to obtain: macro, meso, micro ? Graphite is not easily chemically activated, at least the binder will be but not the graphite itself.
Alain
Dear Alain sir,
I want obtain mesoporosity, please help me.
Thank you.
- Jayesh
Mesoporosity can be obtained by using impregnation with H3PO4 (85% solution) at 550°C or with molten KOH at 800°C. However, as I said, we'll more likely activate the binder than the graphite itself. Just try, and you'll see what happens.
Alain
Thanks sir,
Could you please tell me procedure for microporosity as well ? I want to compare both in terms of system performance.
Thanks for your answers.
Regards,
- Jayesh
Microporosity can be obtained by gasification in a stream of water vapour at 850°C, or of CO2 at 900°C. But graphite for sure will remain unreacted, only the binder will be made porous.
Alain
Dear Jayesh
Interesting to your question I want to ask the result of last year experiments as "impregnation in H3PO4 (85% solution) at 550°C or in molten KOH at 800°C" or "gasification in a stream of water vapour at 850°C, or of CO2 at 900°C".
If it is possible say what happened.
Thanks a lot
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