DOI: 10.1016/j.scib.2020.12.031
论文题名: Robust metal–organic framework with multiple traps for trace Xe/Kr separation
作者: Zhang H. ; Fan Y. ; Krishna R. ; Feng X. ; Wang L. ; Luo F.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2021
卷: 66, 期: 11 起始页码: 1073
结束页码: 1079
语种: 英语
中文关键词: MOFs
; Multiple traps
; UNF off-gas
; Xe/Kr separation
英文关键词: Chemical stability
; Porous materials
; Separation
; Trace elements
; Van der Waals forces
; Adsorption capacities
; Breakthrough experiment
; Direct production
; High selectivity
; Multiple traps
; Porous adsorbent
; Separation mechanism
; Theoretical calculations
; Xenon
英文摘要: Direct separation of Xe and Kr from air or used nuclear fuel (UNF) off-gas by means of porous adsorbents is of industrial importance but is a very challenging task. In this work, we show a robust metal–organic framework (MOF), namely ECUT-60, which renders not only high chemical stability, but also unique structure with multiple traps. This leads to the ultrahigh Xe adsorption capacity, exceeding most reported porous materials. Impressively, this MOF also enables high selectivity of Xe over Kr, CO2, O2, and N2, leading to the high-performance separation for trace quantitites of Xe/Kr from a simulated UNF reprocessing off-gas. The separation capability has been demonstrated by using dynamic breakthrough experiments, giving the record Xe uptake up to 70.4 mmol/kg and the production of 19.7 mmol/kg pure Xe. Consequently, ECUT-60 has promising potential in direct production of Xe from UNF off-gas or air. The separation mechanism, as unveiled by theoretical calculation, is attributed to the multiple traps in ECUT-60 that affords rigid restrict for Xe atom via van der Waals force. © 2020 Science China Press Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170496
Appears in Collections: 气候变化与战略
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作者单位: School of Biology, Chemistry and Material Science, East China University of Technology, Nanchang, 344000, China; Van't Hoff Institute for Molecular Sciences, University of Amsterdam, XH Amsterdam, 1098, Netherlands
Recommended Citation:
Zhang H.,Fan Y.,Krishna R.,et al. Robust metal–organic framework with multiple traps for trace Xe/Kr separation[J]. Science Bulletin,2021-01-01,66(11)