Adsorptive separation of xenon/krypton mixtures using a zirconium-based metal-organic framework with high hydrothermal and radioactive stabilities

Lee, Seung Joon; Yoon, Tae Ung; Kim, Ah Reum; Kim, Seo Yul; Cho, Kyung Ho; Hwang, Young Kyu; Yeon, Jei‐Won; Bae, Yang‐Seop

doi:10.1016/j.jhazmat.2016.08.057

Cited by 84 publications

(62 citation statements)

References 61 publications

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“…61 Bae and coworkers recently reported the Xe adsorption and Xe/Kr separation capability of UiO-66 under dynamic conditions. 62 UiO-66 exhibits a Xe saturation capacity of 1.58 mmol/g at 303 K and 1 bar. In comparison, the Kr capacity of UiO-66 is 0.4 mmol/g under similar experimental conditions (Table 1).…”

Section: Mofs With High Surface Areamentioning

confidence: 99%

Xenon Gas Separation and Storage Using Metal-Organic Frameworks

Banerjee

Simon

Elsaidi

et al. 2018

Chem

194

159

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The global demand for Xenon (Xe), a noble gas with applications in electronics, lighting, and the medical industry, is expected to increase significantly over the coming decades. However, the low abundance of Xe in the Earth's atmosphere and the costly cryogenic distillation process that is used to obtain Xe commercially via air separation have limited the scale of applications of Xe. A physisorption-based separation using porous materials could be a viable and cost-effective alternative to cryogenic distillation. In particular, metalorganic frameworks (MOFs) have shown promise as highly Xe-selective porous solids. In this review, we discuss the recent advances of MOFs as adsorbents for noble gas adsorption and separation and the role of computer simulation in finding optimal materials for Xe adsorption.

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Section: Mofs With High Surface Areamentioning

confidence: 99%

Xenon Gas Separation and Storage Using Metal-Organic Frameworks

Banerjee

Simon

Elsaidi

et al. 2018

Chem

194

159

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“…One of the promising approaches for low-cost noble gas separation is physisorption onto microporous materials, such as activated carbons (ACs) [3], zeolites [4,5] and metal organic frameworks (MOFs) [6][7][8][9][10][11]; however, achieving distinguishable equilibrium adsorption abilities among the noble gases for separation is still challenging. Recently, MOFs with open metal sites at the pore surface have shown excellent performance on Xe/Kr separation due to strong interactions between the Xe molecule and accessible open metal sites in the MOFs, indicating that interaction strength plays vital roles on noble gas separation [1].…”

Section: Introductionmentioning

confidence: 99%

Noble gas separation by a MOF with one-dimensional channels

Liu

2019

BMC Chem Eng

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Noble gas separation by microporous materials is a promising alternative to energy-intensive cryogenic distillation method by reducing the separation cost; however, developing novel microporous materials with excellent noble gas separation performance is still challenging due to closing chemical and physical properties among the gases. In this study, we propose to separate the noble gases (He, Ne, Ar, Kr and Xe) utilizing a metal organic framework (MOF), named SIFSIX-3-Zn, with ultra-micron sized 1-dimenssional (1D) channels (3.84 Å). Density functional theory (DFT) calculations reveal that the 1D channels provide significant adsorption potential differences among the noble gas molecules in various sizes: the larger the molecular size, the stronger the adsorption potential. Grand canonical Monte Carlo (GCMC) simulations verify that the MOF exhibits exceptional equilibrium separation performance of noble gases. Remarkably, Xe/He and Xe/Ne adsorption selectivity can be as high as 645 and 596, respectively, at 298 K and 10 kPa. While Xe/Kr selectivity in mixed gas is around 12 with a Xe adsorption amount of about 2.27 mmol/g at 273 K and 100 kPa, making SIFSIX-3-Zn one of the promising materials for equilibrium separation of Xe/Kr mixtures.

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“…Only a few MOFs have been studied for their radiation stability 20,21 . Lee et al reported the potential of three MOFs (MIL-100(Fe), MIL-101(Cr), and UiO-66(Zr)) for Xe/Kr separation 22 . The study showed that UiO-66(Zr) is the most promising adsorbent among the three candidates; however, the radiation stability of UiO-66(Zr) has been performed under low radiation dose of only 2 kGy which is not relevant to the practical Xe/Kr separation at nuclear reprocessing plants.…”

mentioning

confidence: 99%

Radiation-resistant metal-organic framework enables efficient separation of krypton fission gas from spent nuclear fuel

et al. 2020

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Capture and storage of volatile radionuclides that result from processing of used nuclear fuel is a major challenge. Solid adsorbents, in particular ultra-microporous metal-organic frameworks, could be effective in capturing these volatile radionuclides, including 85 Kr. However, metal-organic frameworks are found to have higher affinity for xenon than for krypton, and have comparable affinity for Kr and N 2. Also, the adsorbent needs to have high radiation stability. To address these challenges, here we evaluate a series of ultra-microporous metalorganic frameworks, SIFSIX-3-M (M = Zn, Cu, Ni, Co, or Fe) for their capability in 85 Kr separation and storage using a two-bed breakthrough method. These materials were found to have higher Kr/N 2 selectivity than current benchmark materials, which leads to a notable decrease in the nuclear waste volume. The materials were systematically studied for gamma and beta irradiation stability, and SIFSIX-3-Cu is found to be the most radiation resistant.

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Adsorptive separation of xenon/krypton mixtures using a zirconium-based metal-organic framework with high hydrothermal and radioactive stabilities

Cited by 84 publications

References 61 publications

Xenon Gas Separation and Storage Using Metal-Organic Frameworks

Xenon Gas Separation and Storage Using Metal-Organic Frameworks

Noble gas separation by a MOF with one-dimensional channels

Radiation-resistant metal-organic framework enables efficient separation of krypton fission gas from spent nuclear fuel

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