八角石
沸石
丝光沸石
材料科学
吸附
吸附
介孔材料
化学工程
物理化学
化学
有机化学
催化作用
工程类
作者
Brian J. Riley,Saehwa Chong,Julian Schmid,José Marcial,Emily T. Nienhuis,Mrinal K. Bera,Sungwon Lee,Nathan L. Canfield,Sung M. Kim,Miroslaw A. Derewinski,Radha Kishan Motkuri
标识
DOI:10.1021/acsami.2c01179
摘要
This study evaluated zeolite-based sorbents for iodine gas [I2(g)] capture. Based on the framework structures and porosities, five zeolites, including two faujasite (FAU), one ZSM-5 (MFI), one mesoMFI, one ZSM-22 (TON), as well as two mesoporous materials, were evaluated for I2(g) capture at room temperature and 150 °C in an iodine-saturated environment. From these preliminary studies, the three best-performing zeolites were ion-exchanged with Ag+ and evaluated for I2(g) capture under similar conditions. Energy-dispersive X-ray spectroscopy data suggest that Ag-FAU frameworks were the materials with the highest capacity for I2(g) in this study, showing ∼3× higher adsorption compared to Ag-mordenite (Ag-MOR) at room temperature, but X-ray diffraction measurements show that the faujasite structure collapsed during the adsorption studies because of dealumination. The Ag-MFI zeolites are decent sorbents in real-life applications, showing both good sorption capacities and higher stability. In-depth analyses and characterizations, including synchrotron X-ray absorption spectroscopy, revealed the influence of structural and chemical properties of zeolites on the performance for iodine adsorption from the gas phase.
科研通智能强力驱动
Strongly Powered by AbleSci AI