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목차

The concept of free surface energy
Physisorption measures surface areas
Montecarlo simulation of multilayer adsorption
Adsorbed molecules in equilibrium with pressure
Physisorption and Chemisorption
Information provided physisorption
Types of adsorption isotherms
Mechanism of adsorption on non-porous surfaces

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사진 첨부및 다양한 내용 수록

Porosity and surface area by gas physisorption techniques
The concept of free surface energy
Solid phase:
atoms or molecules
are in equilibrium
Gaseous phase
Degassing
Gaseous phase: adsorbate
Solid phase: adsorbent
Physisorption measures surface areas
Pore size is determined by gas condensation pressure into the pores
Very low temperature
(77 K), vacuum, injection of known doses of inert gas
Surface area is measured by counting the number of molecules deposed in a monolayer
Montecarlo simulation of multilayer adsorption
First layer
Second layer
Third layer
Solid surface
Adsorbed molecules in equilibrium with pressure
Gas molecules remain in contact with the surface for a certain
time before returning to the gaseous phase. This delay is
responsible for the phenomenon of adsorption
Physisorption and Chemisorption
Physisorption main application fields

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