 |
 |
|
Trung, T. K., Deroche, I., Rivera, A., Yang, Q., Yot, P., Ramsahye, N., Vinot, S. D., Devic, T., Horcajada, P., Serre, C., Maurin, G. & Trens, P. (2011) Hydrocarbon adsorption in the isostructural metal organic frameworks MIL-53(Cr) and MIL-47(V). MICROPOROUS AND MESOPOROUS MATERIALS, 140 114–119.
Added by: Richard Baschera (2017-03-01 08:48:23) |
| Type de référence: Article DOI: {10.1016/j.micromeso.2010.09.003} Numéro d'identification (ISBN etc.): {1387-1811} Clé BibTeX: Trung{2011} Voir tous les détails bibliographiques  |
Catégories: HORSIMN Créateurs: Deroche, Devic, Horcajada, Maurin, Ramsahye, Rivera, Serre, Trens, Trung, Vinot, Yang, Yot Collection: {MICROPOROUS AND MESOPOROUS MATERIALS} |
Consultations : 1/465
Indice de consultation : 4% Indice de popularité : 1% |
| Résumé |
|
{The adsorption of n-hexane and n-nonane in MIL-53(Cr) and MIL-47(V) was first investigated by gravimetric measurements. While MIL-53(Cr) exhibits a sub-step during the sorption process induced by the breathing ability of this solid, the adsorption isotherm for MIL-47(V) is of type I. This different shape of the so-obtained isotherms was then interpretated in light of complementary experimental tools including thermogravimetry and X-ray thermodiffraction. We thus evidenced the occurrence of different structures in presence of n-hexane or n-nonane in the case of MIL-53(Cr) identified as the narrow pore (NP) phase and large pore (LP) phase. One noticed the existence of a swollen NP form which spans in a broad range of temperature. A computational assisted structure determination allowed us to elucidate the structures for both NP and LP forms in presence of each investigated alkane. From these structures, the adsorption enthalpies of n-alkanes over MIL-53(Cr) have been computed. It was shown that the NP phase leads to higher enthalpy of adsorption as compared to the LP phase which is related to a higher degree of confinement. (C) 2010 Elsevier Inc. All rights reserved.}
Added by: Richard Baschera |