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Langmuir adsorption isotherm
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A Dictionary of Chemistry
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Copyright information© A Dictionary of Chemistry 2004, originally published by Oxford University Press 2004. (Hide copyright information)
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Langmuir adsorption isotherm
An equation used to describe the amount of gas adsorbed on a plane surface, as a function of the pressure of the gas in equilibrium with the surface. The Langmuir adsorption isotherm can be written: θ =
bp
/(1 +
bp
),
where θ is the fraction of the surface covered by the adsorbate,
p
is the pressure of the gas, and
b
is a constant called the
adsorption coefficient
, which is the equilibrium constant for the process of adsorption. The Langmuir adsorption isotherm was derived by the US chemist Irving ...
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