期刊
MOLECULES
卷 27, 期 21, 页码 -出版社
MDPI
DOI: 10.3390/molecules27217601
关键词
Langmuir equation; local and non-local kinetic equation; sorption-desorption phenomena
资金
- MEPhI Program Priority 2030
The kinetics of adsorption phenomena are analyzed using both local and non-local kinetic equations of the Langmuir type. The results show that the dependence of the adsorption coefficient on the density of adsorbed particles leads to the occurrence of adsorption effects in both saturation and non-saturation regimes.
The kinetics of adsorption phenomena are investigated in terms of local and non-local kinetic equations of the Langmuir type. The sample is assumed in the shape of a slab, limited by two homogeneous planar-parallel surfaces, in such a manner that the problem can be considered one-dimensional. The local kinetic equations in time are analyzed when both saturation and non-saturation regimes are considered. These effects result from an extra dependence of the adsorption coefficient on the density of adsorbed particles, which implies the consideration of nonlinear balance equations. Non-local kinetic equations, arising from the existence of a time delay characterizing a type of reaction occurring between a bulk particle and the surface, are analyzed and show the existence of adsorption effects accompanied by temporal oscillations.
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