Additional Calculations - Micromeritics ASAP 2460 Operator's Manual

ASAP 2460 Operator's Manual

Additional Calculations

Based on the previous calculations, the following can be calculated:
Adjusted Pore Width (Å):
(Shell to Shell)
AL = L –
i i
Cumulative Pore Volume (cm
------------------------------------ -
V =
cum i 
22414cm
where
V =
mol
dV/dD Pore Volume (cm
V
dV
cum i 
-------- - ---------------------------------------- -
=
dD AL
i
Median Pore Width (Å):
V
cum n 
--------------- -
V =
half
D = 10
med
where
D =
l
D =
g
V =
cum,n
V =
g
V =
half
V =
l
246-42800-01 - Aug 2013
Ds
3
/g):
Q V
i mol
3
STP
liquid molar volume from the fluid property information
3
/g-Å):
– V

cum i 1 –
– AL
i i 1 –
2
   
log D + log V
l half
pore width (L ) that corresponds to V
i
pore width (L ) that corresponds to V
i
total cumulative pore volume (V
Kawazoe calculations
cumulative pore volume (V
50% of total cumulative pore volume
cumulative pore volume (V
 
log D
g
    
--------------------------------------------
– log V
l  
log V
g
l
g
) for points designated for Horvath-
cum,i
) for first point greater than V
cum,i
) for first point less than V
cum,i
Appendix C
 
– log D
l
 
– log V
l
half
half
C-31