where (A,} are the constants.

Unfortunately, the evaluation of the parameters that are described by Equations (6.62) and (6.63) requires the use of rather sophisticated numerical procedures because the isotherms are in a nonlinear form relating the amount of adsorbed molecules to the relative pressure. To evaluate these parameters, Terzyk et al. [35] constructed a special algorithm that was able to fit the theoretical isotherm described by Equation (6.63) to the experimental data. This algorithm was a hybrid of a random search method and an evolutionary searching procedure. Numerical calculations of the parameters in Equations (6.62) and (6.63) require special care, and large differences in values might be obtained using different strategies for the calculations.

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