Read e-book online Adsorption onto Heterogeneous Porous Materials: Equilibria PDF

By Aarden F.B.

ISBN-10: 9038628226

ISBN-13: 9789038628226

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Additional info for Adsorption onto Heterogeneous Porous Materials: Equilibria and Kinetics

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However, at this partial pressure a large part of the pores will already be filled with adsorbate. The air/adsorbate surface will be small, compared to the adsorbate/film layer surface. 2-4 that the finiteness of the pores means that they may be filled at much higher partial vapour pressures than infinite pores. It also does not seem to be completely accurate to consider one pore alone, without its surrounding neighbourhood of other pores in the material. Those effects will probably be larger in large pores than in small 44 pores.

2-4) A graphitic layer of 39 carbon atoms like in activated carbon has a surface area of roughly A=7x10-19 m2. 47x10-5 m3mole-1. 2-4, under the assumption that cos(θ)=0, a negative value for the pore width w is obtained. However, at this partial pressure a large part of the pores will already be filled with adsorbate. The air/adsorbate surface will be small, compared to the adsorbate/film layer surface. 2-4 that the finiteness of the pores means that they may be filled at much higher partial vapour pressures than infinite pores.

3 the calculations come up for discussion. 1 it is explained how physical insight in the pore filling mechanisms is used to find a numerical solution to the theory. The subsequent section discusses simulations of nitrogen adsorption onto activated carbon. 2. 3 the results of some multi-component adsorption calculations are discussed. 2. 1-1) i =1 in which vi(r) [J] is the external potential and ρi(r) [m-3] the number density of a component i at position r. The intrinsic Helmholtz free energy functional F[{ρi}] describes the contribution of the molecule-molecule interactions, which are modelled with a Lennard-Jones potential.

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Adsorption onto Heterogeneous Porous Materials: Equilibria and Kinetics by Aarden F.B.


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