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Physisorption information


Physisorption, also called physical adsorption, is a process in which the electronic structure of the atom or molecule is barely perturbed upon adsorption.[1][2][3]

  1. ^ K. Oura; et al. (2003), Surface Science, An Introduction, Berlin: Springer, ISBN 978-3-540-00545-2
  2. ^ M. C. Desjonqueres; et al. (1996), Concepts in surface physics (2nd ed.), New York: Springer-Verlag, ISBN 978-3-540-58622-7, retrieved 29 August 2012
  3. ^ Hans Luth; et al. (1993), Surfaces and interfaces of solids, Springer-Verlag, ISBN 978-3-540-56840-7

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Physisorption

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Physisorption, also called physical adsorption, is a process in which the electronic structure of the atom or molecule is barely perturbed upon adsorption...

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Chemisorption

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creates new types of electronic bonds. In contrast with chemisorption is physisorption, which leaves the chemical species of the adsorbate and surface intact...

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Heterogeneous catalysis

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reactants are the adsorbate. Two types of adsorption are recognized: physisorption, weakly bound adsorption, and chemisorption, strongly bound adsorption...

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Adsorption

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species involved, but the adsorption process is generally classified as physisorption (characteristic of weak van der Waals forces) or chemisorption (characteristic...

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Parylene

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practically no physisorption, and hence no deposition. The closer the deposition temperature is to the threshold temperature the weaker the physisorption. Parylene...

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BET theory

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The observations are very often referred to as physical adsorption or physisorption. In 1938, Stephen Brunauer, Paul Hugh Emmett, and Edward Teller presented...

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Polymer adsorption

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molecules onto the surface of another phase. Adsorption may occur via physisorption and chemisorption. Ions and molecules can adsorb to many types of surfaces...

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Carbon capture and storage

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Such a process is divided into physical and chemical adsorption or physisorption and chemisorption respectively. The former mitigates the issue of CO2...

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Specific surface area

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Condon, James (2020). Surface Area and Porosity Determinations by Physisorption, 2nd edition. Amsterdam, NL: Elsevier. pp. Chapters 3, 4 and 5. ISBN 978-0-12-818785-2...

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Hydrogen storage

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amorphous carbon materials with high apparent surface area. Hydrogen physisorption can be increased in these materials by increasing the apparent surface...

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Ion pump

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and physisorption resulting in a net pumping action. Inert and lighter gases, such as He and H2 tend not to sputter and are absorbed by physisorption. Some...

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Thin film

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types of adsorptions, physisorption and chemisorption, are distinguished by the strength of atomic interactions. Physisorption describes the Van der Waals...

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Hysteresis

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Pierotti, R. A.; J. Roquérol, J.; Siemieniewska, T. (1985). "Reporting physisorption data for gas/solid systems with special reference to the determination...

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Surface science

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is known as adsorption. This can be due to either chemisorption or physisorption, and the strength of molecular adsorption to a catalyst surface is critically...

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Langmuir adsorption model

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number of equivalent sites to which a species can “stick”, either by physisorption or chemisorption. His theory began when he postulated that gaseous molecules...

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Adhesion

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need to be kept close together. In dispersive adhesion, also known as physisorption, two materials are held together by van der Waals forces: the attraction...

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Phases of ice

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substance via the van der Waals force (physisorption). The latter process can occur within ice XVII. In physisorption, there is no chemical reaction, and...

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Water treatment

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the adsorbent: physical and chemical adsorption, commonly known as physisorption and chemisorptions. Activated carbons (ACs) or biological-activated...

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Water on terrestrial planets of the Solar System

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cometary and asteroidal delivery of H2O would be the accretion via physisorption during the formation of the terrestrial planets in the solar nebula...

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Froth flotation

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bond via chemisorption to the mineral or adsorb onto the surface via physisorption. The collision rates for fine particles (50 - 80 μm) can be accurately...

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Brian Hayden

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using surface potential measurements, volumetric adsorption, xenon physisorption, XPS, AES, exoelectron emission and long wavelength photoemission (1979)...

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Hassium

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structures of MO4 (M = Ru, Os, and element 108, Hs) and prediction of physisorption". Physical Review A. 78 (3): 032518. Bibcode:2008PhRvA..78c2518P. doi:10...

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Dark skin

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antibacterial properties, its importance is secondary to 'physical adsorption' (physisorption) to protect against UVR-induced damage. This hypothesis is not consistent...

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Sticking probability

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results. In his theory, molecules are trapped in precursor states of physisorption before chemisorption. Then the molecules meet adsorption sites that...

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Solid sorbents for carbon capture

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can selectively adsorb CO2 without the formation of chemical bonds (physisorption). The significantly lower heat of adsorption for solids requires less...

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Heat transfer physics

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gas laser. Also, fluid particles can be adsorbed on solid surfaces (physisorption and chemisorption), and the frustrated vibrational modes in adsorbates...

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Shale gas

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onto the shale matrix. Further, the adsorption of gas is a process of physisorption, exothermic and spontaneous. The gas in the fractures is produced immediately;...

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Surface reconstruction

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form that the adsorption process takes, whether by relatively weak physisorption through van der Waals interactions or stronger chemisorption through...

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