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at adsorption conditions minus the amount that stays in the material at
desorption conditions.
Young-Laplace equation
Relation between the pressure difference across the inside and the out-
side of a curved interface. For a cylindrical pore and a fully wetting fl uid
(zero contact angle):
2
pp
-
=
γ
gas
liquid
LG,
R
where R is the radius of the pore and γ LG the liquid-gas surface tension.
Zeolites
Zeolites are nanoporous materials. The basic building blocks of zeo-
lites are corner-sharing TO 4 groups, where the T-atom is usually Si, Al,
or in some cases also P. At present, over 200 different zeolite struc-
tures are known, each of which has a similar chemical composition, but
a very different pore topology.
See also Zeolitic Imidazolate Frameworks (ZIFs).
Zeolitic Imidazolate Frameworks
Zeolitic Imidazolate Frameworks (ZIFs) are a special kind of Metal
Organic Framework in which the size of the linker and angle between
linkers are tuned in such a way that they mimic the Si-O-Si bond in
zeolites and hence have the same pore topologies as zeolites.
ZIF
See Zeolitic Imidazolate Frameworks. See also zeolites.
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