4. Simultaneous characterization of micropores and mesopores
In recent years, a great deal of work has been carried out in the field of adsorption modeling and simulation, leading to a better description of the adsorption phenomenon and, consequently, of adsorbents. These calculations do not use Kelvin's law, nor any equation such as that of Harkins and Jura, which gives the thickness of the multimolecular layer as a function of pressure and is assumed to be "universal"; they are based on a set of reference adsorption isotherms calculated, for a set of pores of different sizes, by numerical simulation methods (Monte-Carlo), or by DFT (§ 1.2
The Ultimate Scientific and Technical Reference
This article is included in
Functional materials - Bio-based materials
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Simultaneous characterization of micropores and mesopores
Conclusion
Bibliography
Software tools
Database of hundreds of adsorption isotherms, including many new adsorbents http://adsorbents.nist.gov/
NLDFT calculations http://www.NLDFT.com
Fluid properties https://www.nist.gov/srd/refprop
...Events
On a national scale: annual days of the French Adsorption Association, usually in January-February. http://www.adsorption.fr/spip.php?rubrique1
Internationally: three successive triennial congresses, one per year, usually in April-May, in the following order:
Fundamentals...
Standards and norms
- Pore size distribution and porosity of solid materials by mercury porosimetry and gas adsorption – Part 2 : Analysis of mesopores and macropores by gas adsorption - ISO 15901-2 - 2006
- Pore size distribution and porosity of solid materials by mercury porosimetry and gas adsorption – Part 3 : Analysis of micropores by gas adsorption - ISO 15901-3 - 2007
Regulations. Safety
Use of liquid nitrogen http://bip.cnrs-mrs.fr/acmo/node8.html
Handling nanomaterials and nanoparticles http://www.inrs.fr/risques/nanomateriaux/prevention-risques.html
Gas handling...
Directory
Marketed equipment (non-exhaustive list)
The commercial adsorption units shown in Table allow a detailed study based on the nitrogen adsorption-desorption isotherm at 77 K. Generally speaking, the adsorption isotherm domain they automatically record, and the software they are equipped with, allow fairly easy access to specific surface area (BET method
The Ultimate Scientific and Technical Reference
