physisorption


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physisorption

[¦fiz·ə′sȯrp·shən]
(physical chemistry)
A physical adsorption process in which there are van der Waals forces of interaction between gas or liquid molecules and a solid surface.
References in periodicals archive ?
To identify the predominant type of porous structure in the chitosan samples and determine the pore volume, adsorption/desorption isotherms were recorded at the liquid nitrogen temperature, using a Quantachrome Surface Area Analyzer (nitrogen physisorption method--BET).
This instrument(s) should have the capability to facilitate automated physisorption measurements relevant to research in the areas of porous materials including metal organic frameworks, activated carbon, carbon nanotubes and zeolites.
For this purpose, the synthesized MCM-41 was functionalized with amine group and characterized by using nitrogen physisorption and energy dispersion x-ray (EDX) before immobilization.
N2] specific surface area and physisorption characteristics of original, activated and chemisorbed oil shale ash samples Sample BET-surface t-Plot t-Plot area, micropore external [m.
physisorption, and discusses energetics, molecular modeling, and diffusion.
After outgassing, 73 points nitrogen physisorption isotherm was performed at liquid nitrogen temperature (77K).
Iler, an authority on the synthesis and reactions involving precipitated silica, discusses the chemisorption and physisorption of a multitude of functional groups with the silica surface in the well known book, Chemistry of Silica (ref.
ads]) reveal that inhibitor was adsorbed on the mild carbon steel surface via both physisorption and chemisorption mechanisms.
The temperatures required for absorption and desorption indicate the hydrogen is incorporated into the composite through chemisorption rather than physisorption to either lithium or carbon atoms or both in the material.
He finished his doctoral thesis, on physisorption of inorganic molecules on insulator single crystal surfaces, in 1998, receiving the degree Dr.
This later product can combine support for nuclear magnetic resonance (NMR), Raman and chromatography data, as well as x-ray powder diffraction (XRPD), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), electron paramagnetic resonance (EPR), ion mobility spectrometry (IMS), physisorption, potentiometry and kinetics (to name only a few).
Incubation of sP on the polystyrene surface of a flow chamber is known to cause effective immobilization by simple nonspecific physisorption.