In any position of horizontal fractures, the porosity of pores decreases in the following order: mesopores > tiny pores > macropores > micropores
. Among the pores, mesopores dominate.
Due to the limitations of MIP associated with pores smaller than 0.1 [micro]m, Otalvaro (2013) performed both MIP and [N.sub.2] adsorption tests on the same soil and concluded that the differences between the micropores
determined via MIP and the [N.sub.2] tests were not significant.
After 10 F-T cycles, it could be found that light spot extends to the inner of the sample, and some light spots become brighter, which reveals that new micropores
are formed and some micropores
expand to a larger size inside the rock.
Compared with HC, AHC exhibited higher specific surface area (1221 [m.sup.2]/g), micropores
volume (0.38 [m.sup.3]/g), and narrower distributed micropores
(~0.50 nm), indicating that the KOH activation contributes the most to the formation of micropore
This result indicated the existence of large amount of micropores
in these samples.
Previous studies have shown that the incremental macro- and micropores
contribute the most to the cumulative pore volume and SSA, respectively [37, 38].
The reason is that the flow through the deposited particle layer mainly depends on the soot properties and the filtration velocities, and the particle layer characteristics are no longer subjected to the structure of the ceramic micropores
structure will be formed on the surface or in the bulk after manufacture processing due to powder compression and volatilization of light components in binder.
The parameters of the surface micropores
, such as number, total area, and diameter, were simultaneously counted from the binary images and the surface porosity was calculated.
The adsorption of C[O.sub.2] at low pressure range possibly involves the adsorption in small narrow micropores
of a few molecular dimensions of theadsorptivemolecules, known as primarymicropore filling .
Some commercially available edible packaging films and coatings are already on the market, but many of those are made of starch, which is more porous and allows oxygen to seep through its micropores
. The casein-based films, however, have smaller pores and can create a tighter network and a barrier that keep oxygen out.
Meanwhile, metal organic frameworks (MOFs) offer uniform micropores
, high surface areas and greater stability but they also rapidly decompose in the presence of water.