Further Insight into Surface Fractal Dimension of Micropore Walls of Active Carbon Using a Simplified Parallel Plate Model

Ozone Treatment of Coal- and Coffee Grounds-Based Active Carbons: Water Vapor Adsorption and Surface Fractal Micropores

“…The adsorption potentials of dispersion forces are strongly enhanced in micropores because of the overlap of the fields from the opposite micropore walls; therefore, micropores are the basic factor in adsorption (28). The micropore volume is the total volume of the respective micropore units (23,24), which is made up of the space between opposite pore walls with L Յ 2 nm, and the total micropore volume can be estimated from the DR (16) Table 1.…”

“…Here, for the analysis of micropore structures, the theory of volume filling of micropores (4) and the parallel plate models of micropore structures (15,(22)(23)(24) were adopted. Applicable here is the equation…”

Adsorption of Water Vapor on Active Carbon Preadsorbed with Methanol and Benzene

“…The decrease in water vapor adsorption important in influencing water vapor adsorption. From the in low vapor pressure is due to the adsorption of methanol proposed schematic diagram of micropores (25) and the on carbon-oxygen surface complexes by hydrogen bonds more easily understandable parallel plate models (26,27), between hydroxyl groups of methanol and oxygen-surface adsorption sites are divided into the basal planes and the complexes. But afterward, adsorbed methanol molecules beedges.…”

Surface Fractal Parallel Plate Models for Micropore Structures of Active Carbon

“…The histograms in the micropore range are also compared with Eq. [1]; it is assumed that the minimum pore width into which benzene can be adsorbed horizontally to the surface is 0.36 nm (4). The difference in the histograms between both models normalized in the 0 £ L £ 9d range is conspicuous with large D S values, but when normalized in the micropore range of d £ L £ 6d, the difference decreases.…”

“…Should the structure of the ideal graphite with D S Å 2 be chosen as the starting material for the construction of microporous carbon, both n and D S can be used as indicators of the percentage burnoff 0DW/ W because 0DW/W is defined by {1 0 (S 1 / S 2 / rrr / S n )/nS 1 Equation [2] demonstrates the generally accepted observation that the burnoff leads to pore widening (9) and the feasibility of the micropore structure analysis using the disordered surface fractal parallel plate model proposed here.…”