Dear fellow researchers,
Through my readings, activated carbons is capable to adsorb CO2 better than N2 due to high polarizability & quadrupole of these CO2 molecules. Thus, appreciate if someone can explain how does polarizability and quadrupole affect the CO2 uptake onto activated carbon?
Thanks in advance.
Hello,
Having a high a molecular polarizability and dipole moment stimulate a stronger dispersion and stronger electrostatic interaction between CO2 and activated carbon. a higher quadrupole moment of CO2 result in an stronger affinity. I think the charges on solid surface of the activated carbon play an important role on the adsorption process, therefore electrostatic interaction may govern the adsorption process, in this regard CO2 with higher polarizability and quadrupole moment might have a stronger affinity with activated carbon than N2.
I hope it will help
Hi
Dear research
This different is related to difference in orbital molecular structure of CO2 and N2 .
Best times
The difference on molecule weight between CO2 and N2 may also contribute to above difference.
Dear Nor Adilla Rashidi ,
The various factors affect the CO2 adsorption on activated carbon.
presence of micropores, surface functional groups, activating agents used in synthesis, alkali elements. pressure and temperature of adsorption, wall potential etc.
- Badges
- Science topic