Desorb
Desorb refers to the process by which a substance is released from or through a surface. This term is commonly used in chemistry and physics to describe the removal of an adsorbate from a surface on which it is adsorbed. Desorption is the reverse of adsorption, which is the process by which atoms, ions, or molecules from a gas, liquid, or dissolved solid adhere to a surface.
Mechanism[edit | edit source]
Desorption can occur through various mechanisms, including:
- Thermal desorption: where increased temperature provides the energy needed for the adsorbate to overcome the binding energy and leave the surface.
- Pressure desorption: where a decrease in pressure reduces the concentration of the adsorbate in the surrounding phase, leading to desorption.
- Chemical desorption: where a chemical reaction changes the adsorbate into a form that is less strongly bound to the surface.
Applications[edit | edit source]
Desorption is a critical process in many industrial and scientific applications, including:
- Chromatography: where desorption is used to separate different components of a mixture.
- Catalysis: where desorption of reaction products from the catalyst surface is necessary for the catalyst to be reused.
- Environmental science: where desorption processes are studied to understand the release of pollutants from soils and sediments.
Factors Affecting Desorption[edit | edit source]
Several factors can influence the rate and extent of desorption, including:
- Temperature: Higher temperatures generally increase the rate of desorption.
- Pressure: Lower pressures can enhance desorption by reducing the concentration of the adsorbate in the surrounding phase.
- Surface properties: The nature of the surface, including its surface area, porosity, and chemical composition, can significantly affect desorption.
Related Concepts[edit | edit source]
See Also[edit | edit source]
Search WikiMD
Ad.Tired of being Overweight? Try W8MD's physician weight loss program.
Semaglutide (Ozempic / Wegovy and Tirzepatide (Mounjaro / Zepbound) available.
Advertise on WikiMD
|
WikiMD's Wellness Encyclopedia |
| Let Food Be Thy Medicine Medicine Thy Food - Hippocrates |
Translate this page: - East Asian
中文,
日本,
한국어,
South Asian
हिन्दी,
தமிழ்,
తెలుగు,
Urdu,
ಕನ್ನಡ,
Southeast Asian
Indonesian,
Vietnamese,
Thai,
မြန်မာဘာသာ,
বাংলা
European
español,
Deutsch,
français,
Greek,
português do Brasil,
polski,
română,
русский,
Nederlands,
norsk,
svenska,
suomi,
Italian
Middle Eastern & African
عربى,
Turkish,
Persian,
Hebrew,
Afrikaans,
isiZulu,
Kiswahili,
Other
Bulgarian,
Hungarian,
Czech,
Swedish,
മലയാളം,
मराठी,
ਪੰਜਾਬੀ,
ગુજરાતી,
Portuguese,
Ukrainian
Medical Disclaimer: WikiMD is not a substitute for professional medical advice. The information on WikiMD is provided as an information resource only, may be incorrect, outdated or misleading, and is not to be used or relied on for any diagnostic or treatment purposes. Please consult your health care provider before making any healthcare decisions or for guidance about a specific medical condition. WikiMD expressly disclaims responsibility, and shall have no liability, for any damages, loss, injury, or liability whatsoever suffered as a result of your reliance on the information contained in this site. By visiting this site you agree to the foregoing terms and conditions, which may from time to time be changed or supplemented by WikiMD. If you do not agree to the foregoing terms and conditions, you should not enter or use this site. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.
Contributors: Prab R. Tumpati, MD
