Calculations - Micromeritics Gemini VII 2390a Operator's Manual

Gemini VII
c.) The walls of the cylindrical pore - the diameter of the empty pore is required to determine
the pore volume and pore area. End area is neglected.

Calculations

The volumes adsorbed (Va) are converted to the liquid equivalent volumes (V1, cm
  D  
=
VI Va
I I
where D is the Density Conversion Factor from the Adsorptive Properties dialog.
The relative pressure (Pr
ple are filled.
The corresponding Kelvin core radius is calculated. Only pores smaller than this size will be included:
---------------------------------------- -
=
Rc
 
1 +
I
F
where
A =
F =
This radius will be adjusted for the thickness of the adsorbed layer during subsequent calculation steps.
239-42828-01 - Dec 2012
Insignificant
compared to
core length
) is assumed to be close to unity so that substantially all the pores in the sam-
1
–
A
   
ln
Pr
I
adsorbate property factor (the BJH Adsorptive Options dialog)
fraction of pores open at both ends (from the BJH Adsorption Report Options
dialog or the BJH Desorption Report Options dialog); assumed to be zero for
desorption
Pore
Wall
Appendix C
3
/g):
C-11