In N2 sorption isotherm is it like typical Type IV and Type III isotherm mixed and the hysteresis which it is following is H3 hysteresis is it correct?
It is not saturating also what kind of capillary shape can be possible
What can you say about dV/dlogD stands for
Hi Sanjeev,
The isotherm for your sample is a type-IV isotherm with H1 hysteresis. For pore size distribution study, dV/dD is preferably used. For more details about the nature of isotherm, you can read the IUPAC recommendation for gas sorption attached by Christian Weinberger.
Dear Sanjeev,
I agree with Christian’s comments except for the isotherm that looks like H3 class.
Best Regards
Tariq
I believe that you have a Type IV isotherm which then shows the presence of narrow macropores, causing the upswing at high relative pressures instead of the plateau of a purely mesoporous material. I can not agree with Christian Weinberger´s comment on the lower clousure point not being due to the tensile strength effect since it is the classic abrupt closure at a relative pressure of 0.42 p/p° giving rise to the Sharp máxima in your PSD plot. Personally with this closure point I would say that the hysteresis loop is of type H3.
Best regards,
Malcolm
- Badges
- Science topic
- Similar topics
- Engineering
- Petroleum Engineering
- Gas