Yury Konstantinovich Tovbin

The Molecular Theory of Adsorption in Porous Solids (eBook, PDF)

• Format: PDF

Produktbeschreibung

In the adsorption phenomenon the substances from the external environment the gas or liquid are absorbed by a solid surface (adsorbent). Adsorption is used to separate gaseous and liquid mixtures, for drying and purification of gases and liquids. This reference broadly explores the calculation of the equilibrium and dynamic characteristics of adsorption in porous bodies at the molecular level. Two new theories of statistical physics are presented, both developed by the author for the consistent description of the equilibrium distribution of molecules and dynamics of flows in complex porous materials to be able to solve a wide range of practical tasks in the development of new technologies.

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Produktdetails

• Verlag: Taylor & Francis
• Seitenzahl: 780
• Erscheinungstermin: 17. Oktober 2017
• Englisch
• ISBN-13: 9781351652889
• Artikelnr.: 49995550

Autorenporträt

Yu K. Tovbin

Inhaltsangabe

Contents. Foreword. Symbols. Introduction. The structure of porous bodies.
Adsorption isotherms. Transport in porous solids. Intermolecular
interactions. Lattice model of adsorption and the theory of fluid. The
heterogeneity of the surface of solids. Heterogeneous systems. Adsorption
on heterogeneous surfaces. Motion of molecules in cells. Equation of state.
Bulk phase. Adsorption on amorphous surfaces. Multilayers on the exposed
surface. Slit-shaped pores. Cylindrical pores. Clusters in volume and
pores. Thermodynamic characteristics of adsorption systems. Thermodynamic
conditions of phase separation. Critical conditions for heterogeneous
surfaces. Critical conditions for porous systems. The curves of the
vapour-liquid phase separation in slit-like pores. Curves of vapour-liquid
phase separation in cylindrical pores. Hysteresis loops with capillary
condensation. Size effects. Wide pores. Wide pores and Kelvin equation. The
vapour-liquid boundary in the pores. Kinetic equations in the condensed
phase. Rates of elementary stages of adsorption and diffusion. Microscopic
hydrodynamics. Local transport equation. The equations for the pair
distribution functions. Boundary and initial conditions. Models of
molecular transport in the bulk phase. The concentration dependence of the
transport coefficients in the volume. Molecular models of the transport of
molecules in crevices. Concentration dependences of the diffusion
coefficients and viscosity. Sliding friction coefficient. Concentration
dependences of the thermal conductivity coefficient in slits. The mobility
of the fluid in a slit-like micropore: comparison with molecular dynamics.
Local mobility of argon. Dynamic characteristics of molecules in narrow
cylindrical. Statement of the problem and description of the calculation
field. Relaxation dynamics of the liquid phase. Dynamics of the vapour
bubble. A system with two bubbles. The structural inhomogeneity of the
channel wall. Influence of the wall potential on molecular flows in narrow
channels. The movement of the vapour-liquid meniscus in tight slit pores.
Molecular flows in narrow pores with small initial perturbations. Wetting
and spreading processes. Pores of complex geometry and porous systems.
Spherocylindrical pores. Systems of cylinders. Systems of slit-shaped
pores. Globular porous systems. Adsorption hysteresis and conditions of its
disappearance . Polydisperse system and adsorption porosimetry. Dynamic
properties. Equilibrium properties of mixtures of components of comparable
size in the bulk phase. Equilibrium distributions of mixture components in
the pores. Bulk transport characteristics of binary mixtures. Diffusion
coefficients in the slit-like pores. The shear viscosity coefficients. The
sliding friction coefficient for the mixture. Spherocylindrical system.
Distribution of microimpurities in equilibrium and flows. Large particles.
Equilibrium properties of large molecules. Transfer coefficients of
rod-shaped molecules. Classification of the pore size. Micropore volume.
Microheterogeneity of porous systems. Transport of molecules. Prospects