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Article Dans Une Revue Microporous and Mesoporous Materials Année : 2011

Synthesis and characterization of a series of porous lanthanide tricarboxylates

Thomas Devic
Virgile Wagner
  • Fonction : Auteur
Nathalie Guillou
Alexandre Vimont
Mohamed Haouas
Michele Pascolini
  • Fonction : Auteur
Christian Serre
Marco Daturi

Résumé

The synthesis of a series of 11 porous lanthanides-based MOFs formulated Ln(C27H15O6)(H2O)center dot x(solv) (denoted MIL-103) (Ln = La to Ho, Y), presenting large one-dimensional channels and a high surface area after dehydration, is reported. X-ray diffraction (XRD) reveals that these solids crystallize in the chiral space group R32 (no. 155) with a slight contraction of the cell parameters according to the ionic radii of the rare-earth. Their thermal stability has been characterized concomitantly by thermogravimetric analysis, X-ray thermodiffraction, H-1 solid state NMR, in situ IR spectroscopy and nitrogen sorption measurements, revealing that (i) all solids are stable upon dehydration and porous (SBET around 700 m(2) g(-1)); (ii) dehydration is accompanied by a structural rearrangement of the lanthanide cations coordination shell. This rearrangement is reversible upon re-hydration, thus proving the presence of accessible Lewis acid sites within the dehydrated forms, whose strength increases when the ionic radius of the metal decreases. Finally, first photoluminescent properties of the Eu-based material have been investigated. (C) 2010 Elsevier Inc. All rights reserved.

Domaines

Chimie
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Dates et versions

hal-01840393 , version 1 (16-07-2018)

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  • HAL Id : hal-01840393 , version 1

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Thomas Devic, Virgile Wagner, Nathalie Guillou, Alexandre Vimont, Mohamed Haouas, et al.. Synthesis and characterization of a series of porous lanthanide tricarboxylates. Microporous and Mesoporous Materials, 2011, 140 (1-3, SI), pp.25--33. ⟨hal-01840393⟩
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