Efficient capture of iodine and methyl iodide using all-silica EMM-17 zeolite

Tingting Pan; Xinglong Dong; Yu Han

doi:10.1007/s12274-023-5497-1

Efficient capture of iodine and methyl iodide using all-silica EMM-17 zeolite

Tingting Pan, Xinglong Dong, Yu Han

Research output: Contribution to journal › Article › peer-review

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Abstract

Hydrophobic zeolites have been identified as suitable adsorbents for capturing radioactive iodine species from nuclear-power-plant off-gas because of their high stability and strong water resistance. However, only the most common zeolites have been investigated for the capture of molecular iodine to date. Herein, we demonstrate that the composition and pore structure of zeolites considerably affect their iodine adsorption performance. A novel all-silica ExxonMobil material-17 (EMM-17) zeolite having a unique three-dimensional 10(12) × 10(12) × 11-ring channel system exhibits a high adsorption capacity for iodine and methyl iodide in the presence of water. EMM-17 outperforms previously reported zeolites in terms of gravimetric and volumetric adsorption capacity in dynamic adsorption measurements. The excellent iodine/methyl iodide capture properties are attributed to the combination of optimal pore size, high pore volume, strong hydrophobicity, and suitable particle morphology. This study provides useful insights for designing efficient adsorbents for iodine capture.

Original language	English (US)
Journal	Nano Research
DOIs	https://doi.org/10.1007/s12274-023-5497-1
State	Published - Mar 18 2023

ASJC Scopus subject areas

General Materials Science
Electrical and Electronic Engineering

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title = "Efficient capture of iodine and methyl iodide using all-silica EMM-17 zeolite",

abstract = "Hydrophobic zeolites have been identified as suitable adsorbents for capturing radioactive iodine species from nuclear-power-plant off-gas because of their high stability and strong water resistance. However, only the most common zeolites have been investigated for the capture of molecular iodine to date. Herein, we demonstrate that the composition and pore structure of zeolites considerably affect their iodine adsorption performance. A novel all-silica ExxonMobil material-17 (EMM-17) zeolite having a unique three-dimensional 10(12) × 10(12) × 11-ring channel system exhibits a high adsorption capacity for iodine and methyl iodide in the presence of water. EMM-17 outperforms previously reported zeolites in terms of gravimetric and volumetric adsorption capacity in dynamic adsorption measurements. The excellent iodine/methyl iodide capture properties are attributed to the combination of optimal pore size, high pore volume, strong hydrophobicity, and suitable particle morphology. This study provides useful insights for designing efficient adsorbents for iodine capture.",

author = "Tingting Pan and Xinglong Dong and Yu Han",

note = "KAUST Repository Item: Exported on 2023-03-27 Acknowledged KAUST grant number(s): FCC/1/1972-43-01 Acknowledgements: This research is supported by the AMPM CCF fund (No. FCC/1/1972-43-01) to Y. H. from King Abdullah University of Science and Technology.",

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doi = "10.1007/s12274-023-5497-1",

language = "English (US)",

journal = "Nano Research",

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AU - Pan, Tingting

AU - Dong, Xinglong

AU - Han, Yu

N1 - KAUST Repository Item: Exported on 2023-03-27 Acknowledged KAUST grant number(s): FCC/1/1972-43-01 Acknowledgements: This research is supported by the AMPM CCF fund (No. FCC/1/1972-43-01) to Y. H. from King Abdullah University of Science and Technology.

PY - 2023/3/18

Y1 - 2023/3/18

N2 - Hydrophobic zeolites have been identified as suitable adsorbents for capturing radioactive iodine species from nuclear-power-plant off-gas because of their high stability and strong water resistance. However, only the most common zeolites have been investigated for the capture of molecular iodine to date. Herein, we demonstrate that the composition and pore structure of zeolites considerably affect their iodine adsorption performance. A novel all-silica ExxonMobil material-17 (EMM-17) zeolite having a unique three-dimensional 10(12) × 10(12) × 11-ring channel system exhibits a high adsorption capacity for iodine and methyl iodide in the presence of water. EMM-17 outperforms previously reported zeolites in terms of gravimetric and volumetric adsorption capacity in dynamic adsorption measurements. The excellent iodine/methyl iodide capture properties are attributed to the combination of optimal pore size, high pore volume, strong hydrophobicity, and suitable particle morphology. This study provides useful insights for designing efficient adsorbents for iodine capture.

AB - Hydrophobic zeolites have been identified as suitable adsorbents for capturing radioactive iodine species from nuclear-power-plant off-gas because of their high stability and strong water resistance. However, only the most common zeolites have been investigated for the capture of molecular iodine to date. Herein, we demonstrate that the composition and pore structure of zeolites considerably affect their iodine adsorption performance. A novel all-silica ExxonMobil material-17 (EMM-17) zeolite having a unique three-dimensional 10(12) × 10(12) × 11-ring channel system exhibits a high adsorption capacity for iodine and methyl iodide in the presence of water. EMM-17 outperforms previously reported zeolites in terms of gravimetric and volumetric adsorption capacity in dynamic adsorption measurements. The excellent iodine/methyl iodide capture properties are attributed to the combination of optimal pore size, high pore volume, strong hydrophobicity, and suitable particle morphology. This study provides useful insights for designing efficient adsorbents for iodine capture.

UR - http://hdl.handle.net/10754/690604

UR - https://link.springer.com/10.1007/s12274-023-5497-1

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JO - Nano Research

JF - Nano Research

ER -

Efficient capture of iodine and methyl iodide using all-silica EMM-17 zeolite

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