Separation of Gases Using Ultra-Thin Porous Layers of Monodisperse Nanoparticles

Abstract

Abstract. The present paper deals with a numerical solution of the two-dimensional problem of helium and methane molecules motion through an ultra-thin layer of a porous material composed of spherical nanoparticles of the same size. The interaction potential "nanoparticlemolecule" is obtained by integrating paired molecular interactions over the nanoparticle volume. Using the method of classical molecular dynamics, permeability of a layer having the size of about 10 -8 m is studied.

Permeability of a triangular packing of open nanotubes

“…Previously, the integral impact of volume nanoparticles using the method of defining particularities was found in the papers [1][2][3][4][5][6][7]. Continuous integration on the basis of a modified LJ-potential was tested in [8][9][10][11][12][13][14]. This approach can provide significant advances in theoretical studies on membrane transport of neutral particles, as well as in solving numerous problems of surface phenomena physics [15][16][17][18][19][20][21].…”

Helium passage through homogeneous ultrafine hydrocarbon layers

“…Fluid motions in nanochannels [1][2][3], diffusion of nanoparticles in gas [4][5][6], deformations of crystalline and diamond-like phases [7][8][9][10][11][12], as well as permeability of ultra-thin films [12][13][14][15][16][17][18], are the subject of modern nanomechanics. In this paper, we conduct theoretical research of permeability for nanoscale layers, which have a fibrous structure and are created on a polymer basis.…”

Research on permeability of carbon nanotubes

“…Molecular dynamics methods are widely used in modern research for the purpose of simulating fluid motion in nanochannels [2,3] and when calculating the diffusion coefficient of nanoparticles [4][5][6][7], as well as their interactions with each other [8]. These same methods are used in studying diamond-like phases [9][10][11][12][13] and discrete breathers [14], in analyzing severe plastic deformation of media containing crystal grains [15], as well as in investigating permeability of ultra-thin films in the framework of Newtonian dynamics [16][17][18][19][20][21][22] and on the basis of quantum-mechanical models [23,24]. In this paper we research permeability of an open carboxylic nanotube for molecules and atoms of various substances in a gaseous state.…”