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 ?
Tenders are invited for Physisorption bet equipment to measure surface area and pore size
2] uptake Compared with other types of solids, such as MgO [37], CaO [38], or Mg-Al mixed oxides [39], which have basicities as high as 180 [micro]mol/g, the basicity of the studied HAps is considerably low, indicating that these solids have a moderate surface basicity, and that they mainly have surface sites where physisorption mechanisms occur through formation of surface carbonates [36].
It showed weight loss at temperature between 100[degrees]C to 200[degrees]C which may be due to the physisorption of water from both the seashells, and the broadness of the peak well correlated with FT -IR spectrum.
2]) adsorption at 77 K using a Micromeritics ASAP 2020 Physisorption Analyzer (Micromeritics Instrument Corporation).
Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity (Recommendations 1984).
The comprehension of the real contribution of chemisorption, physisorption and even ion exchange is essential to improve the selectivity and efficiency of the adsorbent.
Dubinin Radushkevich (D-R) model is a more general model that does not assume a homogenous surface or constant adsorption potential, D-R model gives information about sorption mechanism, whether chemisorption or physisorption [23] and it is expressed by the mathematical equation;
Open space for the physisorption of H2: Cointercalation of graphite with Li, Ti metal atoms and ethylene molecules.
The contributions that make up the main body of the text are devoted to nanocrystalline materials for hybrid photovoltaic devices, the characteristics and characterizations of thin film solar cells, water desalination using solar energy, hydrogen storage by physisorption, and a wide variety of other related subjects.
Reporting physisorption data for gas/solid systems with special references to the determination of surface area and porosity.