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

作　　者：Tingting Pan Xinglong Dong Yu Han 

机构地区：[1]Advanced Membranes and Porous Materials(AMPM)Center,Physical Sciences and Engineering Division,King Abdullah University of Science and Technology(KAUST),Thuwal 23955-6900,Saudi Arabia

出　　处：《Nano Research》2023年第5期6308-6315,共8页纳米研究（英文版）

基　　金：the AMPM CCF fund(No.FCC/1/1972-43-01)to Y.H.from King Abdullah University of Science and Technology.

摘　　要：Hydrophobic zeolites have been identified as suitable adsorbents for capturing radioactive iodine species from nuclear-powerplant 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,suitable particle morphology.This study provides useful insights for designing efficient adsorbents for iodine capture.

关 键 词：ExxonMobil material-17(EMM-17)zeolite iodine capture methyl iodide adsorption 

分 类 号：O64[理学—物理化学]