Adsorption Theory Modeling and Analysis Toth by Jozsef Toth PDF

By Jozsef Toth

ISBN-10: 0824707478

ISBN-13: 9780824707477

Bargains an outline of the hot theoretical and useful effects completed in gas-solid (G/S), liquid-solid (L/S), and gas-liquid (G/L) adsorption examine.

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Extra resources for Adsorption Theory Modeling and Analysis Toth

Example text

In the top (right) of Fig. 8, wF ¼ 1:17, the place of minimum, Ymin , according to Eq. (134) has been increased. So, from the analysis and figures above, it follows that the Type I isotherm is described when 0 < BF < 1=wF , Type V isotherms can occur when 1=wF < BF < 4=wF , and two-dimensional condensation takes place when BF > 4=wF . A very interesting limiting case is shown at the To´th 26 FIG. 9 The values of function cðYÞ corresponding to the Type V isotherm. bottom (left) of Fig. 8 when wF ¼ 1:333: In this case, the minimum value of BF;min ; that is, Eq.

The integration of Eq. (249) has been performed numerically. D. The Modified de Boer–Hobson Equation Applied to Heterogeneous Surfaces (BT Equation) The thermodynamically consistent mBH equation and its function cmB ðYÞ have been defined by Eqs. (174) and (171), respectively. If it is introduced the parameter t proposed by To´th, then we have  2 wB ÀBB Yt ð250Þ cBT ðYÞ ¼ wB À Y t Substituting Eq. (250) into Eq. (95) and performing the integrations, we obtain & ' & ' 1 B Y Yt BB Yt P ¼ Pm ðwB À 1Þ1=t exp À þ B exp À t ðwB À Yt Þ1=t t tðwB À 1Þ tðwB À Yt Þ ð251Þ 50 To´th FIG.

The average percentile deviation ðD%Þ has been calculated using the following relationship:   N ðP À P  1 P c  Â 100 D% ¼ ð149Þ  P N i¼1 Interpretation of Adsorption Isotherms 31 where P is the measured equilibrium pressure, Pc is calculated equilibrium pressures, and N is the number of the measured points ðY; PÞ. We have the constants IF , wF , and BF as results of the fitting procedure. According to Eq. (129), we obtain KmF ¼ ðIF ÞÀ1 ð150Þ Finally, the pressure when the total monolayer capacity is completed, Pm yields Eq.

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Adsorption Theory Modeling and Analysis Toth by Jozsef Toth


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