Kelvin Equation With Broekhoff-De Boer Thickness Curve; References - Micromeritics ASAP 2020 Confirm Operator's Manual

ASAP 2020 Confirm
The nitrogen properties used in the Kelvin equation are:
Surface tension = 8.88 dynes cm
Molar density
N2 - Harkins and Jura Thickness Curve
Geometry:
Substrate:
Category:
Method:
The calculation is the same as above except that cylindrical geometry is assumed.

References:

Kelvin Equation with Broekhoff-de Boer Thickness Curve

N2 - Broekhoff-de Boer Model
Geometry:
Substrate:
Category:
Method:
The kernel function is calculated using the Broekhoff-de Boer equation with standard
parameters:
The nitrogen properties used in the Kelvin equation are:
Surface tension = 8.88 dynes cm
Molar density
N2 - Broekhoff-de Boer Model
Geometry:
02-42811-01 - Mar 2011
13.99

-------------------------------------------- -
t =


0.034 – log P/Po
-1
-3
= 0.02887 g cm
Cylinder
Average
Porosity
Nitrogen at 77 K
W. D. Harkins and G. Jura, J.A.C.S. 66, 1366 (1944)
J. H. DeBoer et al., J. Colloid and Interface Sci. 21, 405 (1966)
Slit
Average
Porosity
Nitrogen at 77 K
0
 
log p/p =
-1
= 0.02887 g cm -3
Cylinder
1/2



t
– 16.11
– 0.1137
--------------- -
+ 0.1682
2
t
Appendix F
F-15