By Duong D. Do

ISBN-10: 1860941303

ISBN-13: 9781860941306

Covers themes of equilibria & kinetics of adsorption in porous media. even supposing fuel part structures are rather thought of, the rules & innovations are acceptable to liquid part platforms besides. CD-ROM incorporated.

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Additional resources for Adsorption analysis: Equilibria and kinetics (Series on Chem. Engineering)

Example text

It was derived in the last section (eq. 5-5) Substitution of eqs. 5-5) into the partition function (eq. 5-9) where j 8 is the internal molecular partition function and § is the fugacity coefficient. Equating eqs. 5-11) V and u is the horizontal interaction parameter u =| : Eq. 3-27). 5-12) 42 Equilibria The above equation of Nitta et al. deals with mobility of adsorbed molecules and their lateral interaction. When the lateral interaction is zero, eq. 6 Lattice Vacancy Theory Honig and Mueller (1962) adapted the Flory-Huggin polymer-monomer solution theory to obtain the lattice vacancy theory for gas phase adsorption.

4-14) 38 Equilibria where u is the molecular potential energy associated to a site. Thus by equating the above two equations yields the following expression for u 5 n0A But the fractional loading is given by eq. 4-16) where M is the number of active sites. 4-17) where Combining eqs. 4-6) to reduce the number of parameters of that equation. 3-29). 4-19) This equation reduces to the famous Langmuir isotherm when n = 1. 4-19) without adsorbate - adsorbate interactions works well with adsorption of hydrocarbons and carbon dioxide on activated carbon and carbon molecular sieve with n ranging from 2 to 6.

3-25b) The difference between the Volmer equation and the Langmuir equation is that while the affinity constant remains constant in the case of Langmuir mechanism, the "apparent" affinity constant in the case of Volmer mechanism decreases with loading. This means that the rate of increase in loading with pressure is much lower in the case of Volmer compared to that in the case of Langmuir. 211) as: Thus, the isosteric heat is a constant, the same conclusion we obtained earlier for the Langmuir isotherm.

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Adsorption analysis: Equilibria and kinetics (Series on Chem. Engineering) by Duong D. Do


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