[article]
| Titre : |
A new Dubinin-Radushkevich-modified BET combined equation to correlate with a single procedure the full relative pressure range of 77 K N2 isotherms of solids with different textural properties |
| Type de document : |
texte imprimé |
| Auteurs : |
Antonio Marcilla, Auteur ; Amparo Gómez-Siurana, Auteur ; Francisco J. Valdés, Auteur |
| Année de publication : |
2010 |
| Article en page(s) : |
pp. 10820–10826 |
| Note générale : |
Chemical engineering |
| Langues : |
Anglais (eng) |
| Mots-clés : |
Adsorption isotherm data Dubinin− Radushkevich equations BET |
| Résumé : |
In this work, a model capable of adequately correlating and reproducing experimental adsorption isotherm data in the overall relative pressure range is suggested. The equation includes a Dubinin−Radushkevich term and a modified BET term that avoids the discontinuity of BET equation at high relative pressures. Thus, the typical independent application of the Dubinin−Radushkevich and BET equations, involving the need of a selection of the respective relative pressure range, is substituted by a single optimization procedure, permitting the calculation of the values of the parameters characterizing the textural properties of solids. The validity of the procedure has been checked through its application to several experimental examples, corresponding to types I, II, and IV isotherms, showing excellent results in all of the cases. |
| En ligne : |
http://pubs.acs.org/doi/abs/10.1021/ie900912x |
in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 10820–10826
[article] A new Dubinin-Radushkevich-modified BET combined equation to correlate with a single procedure the full relative pressure range of 77 K N2 isotherms of solids with different textural properties [texte imprimé] / Antonio Marcilla, Auteur ; Amparo Gómez-Siurana, Auteur ; Francisco J. Valdés, Auteur . - 2010 . - pp. 10820–10826. Chemical engineering Langues : Anglais ( eng) in Industrial & engineering chemistry research > Vol. 48 N° 24 (Décembre 2009) . - pp. 10820–10826
| Mots-clés : |
Adsorption isotherm data Dubinin− Radushkevich equations BET |
| Résumé : |
In this work, a model capable of adequately correlating and reproducing experimental adsorption isotherm data in the overall relative pressure range is suggested. The equation includes a Dubinin−Radushkevich term and a modified BET term that avoids the discontinuity of BET equation at high relative pressures. Thus, the typical independent application of the Dubinin−Radushkevich and BET equations, involving the need of a selection of the respective relative pressure range, is substituted by a single optimization procedure, permitting the calculation of the values of the parameters characterizing the textural properties of solids. The validity of the procedure has been checked through its application to several experimental examples, corresponding to types I, II, and IV isotherms, showing excellent results in all of the cases. |
| En ligne : |
http://pubs.acs.org/doi/abs/10.1021/ie900912x |
|
Ajouter le résultat dans votre panier Faire une suggestion Affiner la rechercheA new dubinin−radushkevich-modified BET combined equation to correlate with a single procedure the full relative pressure range of 77 K N2 isotherms of solids with different textural properties in Industrial & engineering chemistry research, Vol. 48 N° 24 (Décembre 2009)
