Micromeritics Gemini VII 2390a Operator's Manual page 358

Appendix F
This model is particularly useful for characterizing carbon single-wall nanotubes. The reported pore
size range is from 3.5 to 1000 Å.
Reference:
N2 - Carbon Cylinder, multi-wall nanotube by NLDFT
Ar - Argon Cylinder, multi-wall nanotube by NLDFT
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 Å.
Reference:
Ar - Zeolites H-Form by NLDFT
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
reported pore size range is from 3.5 to 300 Å.
F-12
P. Tarazona, Phys. Rev. A 31: 2672 (1985).
Idem, Phys. Rev. A 32: 3148 (1985).
P. Tarazona, U. M. B. Marconi, and R. Evans, Mol. Phys. 60: 573
(1987).
Cylinder
Carbon
Porosity
Nitrogen at 77 K; Argon at 87 K
See above reference.
Cylinder
Zeolite
Porosity
Argon at 77 K
+ +
and (NH ) exchanged zeolites. The
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239-42828-01 - Dec 2012
Gemini VII