Micromeritics ASAP 2020 Confirm Operator's Manual page 424

Appendix F
Carbon Cylinder, multi-wall nanotube by NLDFT
N2 -
Argon Cylinder, multi-wall nanotube by NLDFT
Ar -
Geometry:
Substrate:
Category:
Method:
Model isotherms were calculated using the prescriptions of Tarazona for density dependent
weighting functions and cylindrical pore geometry. The pore wall potential is described by
the Lennard-Jones potential of interaction between a gas molecule and multiple concentric
graphitic surfaces of infinitely long cylinders.
This model is particularly useful for characterizing carbon multi-wall nanotubes. The reported
pore size range is from 3.5 to 1000 angstroms.
Reference:
Zeolites H-Form by NLDFT
Ar -
Geometry:
Substrate:
Category:
Method:
Model isotherms were calculated using the prescriptions of Tarazona for density dependent
weighting functions and cylindrical pore geometry. The pore wall potential is described by
the Lennard-Jones potential of interaction between a gas molecule and the oxide surface of an
infinitely long cylinder.
This model is particularly useful for characterizing oxides and H
lites. The reported pore size range is from 3.5 to 300 angstroms.
Zeolites Me-Form by NLDFT
Ar -
Geometry:
Substrate:
Category:
Method:
Model isotherms were calculated using the prescriptions of Tarazona for density dependent
weighting functions and cylindrical pore geometry. The pore wall potential is described by
the Lennard-Jones potential of interaction between a gas molecule and the oxide surface of an
infinitely long cylinder.
This model is similar to the model above but it more appropriate is for characterizing alkali
metal exchanged zeolites. The reported pore size range is from 3.5 to 300 angstroms.
F-12
Cylinder
Carbon
Porosity
Nitrogen at 77 K; Argon at 87K
See above reference.
Cylinder
Zeolite
Porosity
Argon at 77K
Cylinder
Zeolite
Porosity
Argon at 77K
ASAP 2020 Confirm
+ +
and (NH ) exchanged zeo-
4
202-42811-01 - Mar 2011