Adsorption
Adsorption
Adsorption (/ædˈsɔːrpʃən/) is a process that occurs when a gas or liquid solute accumulates on the surface of a solid or a liquid (adsorbent), forming a molecular or atomic film (the adsorbate). It is different from Absorption where a substance diffuses into a liquid or solid to form a solution.
Etymology
The term "adsorption" was coined in the early 20th century, derived from the Latin word "adsorbere" which means "to suck in" or "to consume".
Related Terms
- Absorption: A process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid.
- Desorption: The process of removing a substance that has been adsorbed.
- Sorption: A physical and chemical process by which one substance becomes attached to another.
- Chemisorption: A type of adsorption where a chemical bond is involved between the adsorbate and the surface.
- Physisorption: A type of adsorption where the adsorbate adheres to the surface only through weak van der Waals forces.
See Also
External links
- Medical encyclopedia article on Adsorption
- Wikipedia's article - Adsorption
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