Application of Shaped UiO-66_NH2 Metal-Organic Framework for Gaseous Iodine Capture

Leloire, Maeva; Abramova, Alla; Couzon, Nelly; royer, sebastien; Loiseau, Thierry; Volkringer, Christophe; Dhainaut, Jeremy

Type de document :

Autre communication scientifique (congrès sans actes - poster - séminaire...): Communication dans un congrès sans actes

URL permanente :

http://hdl.handle.net/20.500.12210/90938

Titre :

Application of Shaped UiO-66_NH2 Metal-Organic Framework for Gaseous Iodine Capture

Auteur(s) :

Leloire, Maeva [Auteur]
Unité de Catalyse et de Chimie du Solide (UCCS) - UMR 8181
Abramova, Alla [Auteur]

Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Couzon, Nelly [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
royer, sebastien [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Loiseau, Thierry [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Volkringer, Christophe [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Dhainaut, Jeremy [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Titre de la manifestation scientifique :

Matériaux 2022

Ville :

Lille

Pays :

France

Date de début de la manifestation scientifique :

2022-10-25

Discipline(s) HAL :

Chimie/Chimie inorganique

Résumé en anglais : [en]

Metal-organic frameworks (MOF) is an emerging class of crystalline and porous materials. Their structure results from the combination of metal clusters (or ions) with multitopic organic linkers. By changing the metal or ...
Lire la suite >Metal-organic frameworks (MOF) is an emerging class of crystalline and porous materials. Their structure results from the combination of metal clusters (or ions) with multitopic organic linkers. By changing the metal or the linker, or by adding organic functionalities to the linker, the physicochemical properties of the MOF can be tailored for specific applications. For instance, iodine-131 is a major fission by-product which can increase the incidence of thyroid cancers. Following a nuclear meltdown, venting is conducted to avoid overpressurization. The vented steam, containing radionuclides such as 131I2, passes through a filtered containment venting system to capture the contaminants. Typically, a fixed bed of silver-doped ZSM-5 zeolite is used. However, several limitations remain due to the small pore aperture of the zeolite (0.55 nm), hardly accommodating bulky iodine derivatives, and the competitive adsorption of contaminants (mainly CO). Hence adsorbents more specific towards I2 and its derivatives, presenting larger pores and/or higher iodine capture capacity, remain desired. In particular, the UiO-66 MOF presents a good stability against water, a high adsorption capacity, and larger pore sizes (0.8 to 1.1 nm). By adding amino moieties on the terephthalate linker, one can obtain UiO-66_NH2, an adsorbent with high binding energy towards electro-acceptors such as I2 [1]. Recently, our group applied severe nuclear accidental conditions to this MOF, previously shaped as binderless granules, showing high retention of 131I2 and preserved physicochemical properties [2]. In a subsequent step, we studied the preparation of UiO-66_NH2-based extrudates and granules that present both high adsorption capacity towards iodine (see Figure 1) and a significantly improved mechanical resistance [3]. The main results and perspectives of this work will be discussed.Lire moins >

Langue :

Anglais

Comité de lecture :

Non

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois

Collections :

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Équipe(s) de recherche :

Matériaux pour la catalyse (MATCAT)
Matériaux hybrides (MATHYB)

Date de dépôt :

2023-11-17T14:35:49Z
2023-12-07T13:27:51Z

Fichiers

Dhainaut_resume_Materiaux2022.pdf
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Numéro de version	Lien	Date de modification
2	20.500.12210/90938*	2023-12-07T13:26:22Z
1	20.500.12210/90938.1	2023-11-17T14:35:49Z

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