Mercury-intrusion data significance

B) the physical significance of ink bottle theories of mercury intrusion have always been the subject of debate (C) a possible reinterpretation of the data in (A) as fractal data. a. and P are the slopes of particular regions of the resulting curve, which may be interpreted as fractal dimensions. 

A similar problem is encountered for the analysis of mercury porosimetry data. The approach based on Equation (6.13) neglects the surface area of the sample-mercury interphase at the beginning of the intrusion process So. If Equation (6.10) is applied to data over a range of mercury pressures, then the effect of neglecting So may be significant. Therefore, Equation (6.10) should be corrected by incorporating So, thus obtaining... 

The commercial sample, spherical bead activated carbon, was supplied by Kureha Chemical Industry. This activated carbon is referred to as Kureha carbon, which has a total micropore volume of 0.56 cm g" and a BET surface area of 1300 m g . The detailed textural properties of Kureha carbon are reported elsewhere [9]. The pore size distribution was evaluated in terms of the simulation of the density hmctional theory (DFT) using the isotherm data of nitrogen adsorption at 77 K and relative pressures up to 0.2. Only micropores contribute to the total pore volume and surface area. This was further confirmed by mercury intrusion porosimetry, no significantly additional porosity was observed in the pore size range from 2 nm to 100 pm. So, the investigated adsorbent is a purely microporous material and its pore size distribution covers the range from 0.4 to 1.9 nm [9]. 

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