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5. Conclusion
The aim of this article was to show how physical nitrogen adsorption data at 77 K can be used to characterize the pores of a nanoporous material.
This type of study has become much more widespread since it has been facilitated by the availability of commercially available equipment [Doc. P 1051] capable of automatically obtaining adsorption-desorption isotherms with very high resolution.
Also, the many porous model materials we can now synthesize, with pores of known shape, regularity and calibrated size, have greatly advanced our understanding of adsorption and capillary condensation phenomena in nanopores.
Finally, the software supplied with the equipment makes it easy to apply all possible theories to experimentally obtained results, which may lead one to believe that it is possible to characterize the texture...
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Conclusion
Glossary
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
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