Simulation of three-dimensional porous networks

Cordero, Salomón; Rojas, Fernando; Riccardo, J. L.

doi:10.1016/s0927-7757(01)00610-0

Cited by 28 publications

(21 citation statements)

References 19 publications

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“…Details about the method of construction of 3-D porous networks through Monte Carlo simulation can be found elsewhere (Cordero et al, 2001); similarly, the algorithm that is employed to replicate sorption processes in porous networks has been reported somewhere else (Rojas et al, 2002). The conditions required for cavities (hollow spheres) and necks (hollow cylinders open at both ends) to be fully occupied by either condensate or vapor are calculated by means of the Broekhoff-de Boer equation (Broekhoff and de Boer, 1967), while the thickness of the adsorbed film is approximated via the Harkins-Jura equation (Harkins and Jura, 1944).…”

Section: Construction Of Simulated 3-d Porous Network and Morphologimentioning

confidence: 99%

“…Topological properties of N-I and N-II have been previously described in detail (Cordero et al, 2001). Particular characteristics of N-I and N-II are as follows.…”

Section: Construction Of Simulated 3-d Porous Network and Morphologimentioning

confidence: 99%

“…2(a)). Now, let us remember that our N-1 network is a multiplex system of tubular pores that meet at some manifold distribution points (Cordero et al, 2001). Let us now pass to the mechanistic aspects of the sorption process.…”

Section: Primary Descending Scanning (Pds) Curvesmentioning

confidence: 99%

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Menisci Interactions during Adsorption on Mesoporous Materials: Evaluation of Delayed and Advanced Adsorption

et al. 2005

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Menisci interactions can strongly affect the development of adsorption processes in mesoporous materials. Phenomena such as delayed and advanced adsorption represent outright manifestations of these interactions then leading to deceptive determinations of the pore-size distribution. At present, a characterization study involving simulated porous networks with qualities similar to those owned by real materials and in which the above processes can occur is still lacking. A Monte Carlo procedure is used to evaluate the extent of delayed and advanced adsorption in porous structures of assorted morphologies. This treatment allows a clear detection of the types of mesoporous structures that can experience the incidence of delayed and advanced adsorption.

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Section: Construction Of Simulated 3-d Porous Network and Morphologimentioning

confidence: 99%

“…Topological properties of N-I and N-II have been previously described in detail (Cordero et al, 2001). Particular characteristics of N-I and N-II are as follows.…”

Section: Construction Of Simulated 3-d Porous Network and Morphologimentioning

confidence: 99%

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Menisci Interactions during Adsorption on Mesoporous Materials: Evaluation of Delayed and Advanced Adsorption

et al. 2005

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“…the precise number of bonds that can surround each site throughout the network) and a mean connectivityZ (i.e. the average number of bonds that delimit a site), an appropriate fraction of bonds with R B = 0 is initially assigned at random in the network, and then the usual procedure described above is followed [35].…”

Section: Dual Site-bond Model (Dsbm)mentioning

confidence: 99%

On the universal behavior of sorption isotherms in disordered mesoporous solids

Cordero

Domı́nguez

Kornhauser

et al. 2004

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Adsorption-desorption isotherms in disordered mesoporous solids, described by the Dual Site-Bond Model, are obtained through Monte Carlo simulations and their behavior is correlated to the topological properties of the porous networks and to their percolation properties, extending previous results to the general case of variable connectivity networks. A quasi-universal curve is found which may be useful in the problem of obtaining pore size distributions from the analysis of experimental Adsorption-desorption isotherms.

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“…A careful examination of both natural and artificial porous media reveals that the empty spaces within a solid matrix, frequently referred as pores, involve in fact two kinds of void entities, namely: pore bodies or sites and pore throats or bonds [1,2].…”

Section: Introductionmentioning

confidence: 99%

Nitrogen adsorption method for determining the mesopore slit-like size distribution of expansive soils

Pérez-Rea

Rojas

Castaño³

2003

Materials Research Innovations

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One of the most important structural parameters involved in the characterization of the void space of soils is the pore size distribution. In this work, a nitrogen adsorption method is presented as an alternative to determine the mesopore contribution of slit-shaped pores to the abovementioned parameter in montmorillonitecontaining soils. The mesopore size structural parameter obtained via this sorption method is related to montmorillonite d 001 interlayer distances proceeding from either X-ray or electron diffraction analysis, if only by assuming during sorption analysis that mesopores resident inside clay grains adopt slit-shaped geometries. Mineralogical analysis and determination of some important geotechnical properties of these montmorillonite-containing soils complement the preceding sorption and structural studies.

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Simulation of three-dimensional porous networks

Cited by 28 publications

References 19 publications

Menisci Interactions during Adsorption on Mesoporous Materials: Evaluation of Delayed and Advanced Adsorption

Menisci Interactions during Adsorption on Mesoporous Materials: Evaluation of Delayed and Advanced Adsorption

On the universal behavior of sorption isotherms in disordered mesoporous solids

Nitrogen adsorption method for determining the mesopore slit-like size distribution of expansive soils

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