Capture of Volatile Iodine, a Gaseous Fission Product, by Zeolitic Imidazolate Framework-8

被引：622

作者：

Sava, Dorina F. ^{[1
]}

Rodriguez, Mark A. ^{[2
]}

Chapman, Karena W. ^{[5
]}

Chupas, Peter J. ^{[5
]}

Greathouse, Jeffery A. ^{[3
]}

Crozier, Paul S. ^{[4
]}

Nenoff, Tina M. ^{[1
]}

机构：

[1] Sandia Natl Labs, Surface & Interface Sci Dept, Albuquerque, NM 87185 USA

[2] Sandia Natl Labs, Mat Characterizat Dept, Albuquerque, NM 87185 USA

[3] Sandia Natl Labs, Dept Geochem, Albuquerque, NM 87185 USA

[4] Sandia Natl Labs, Scalable Algorithms Dept, Albuquerque, NM 87185 USA

[5] Argonne Natl Lab, Xray Sci Div, Adv Photon Source, Argonne, IL 60439 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2011年 / 133卷 / 32期

关键词：

D O I：

10.1021/ja204757x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Here we present detailed structural evidence of captured molecular iodine (I-2), a volatile gaseous fission product, within the metal-organic framework ZIF-8 [zeolitic imidazolate framework-8 or Zn(2-methylimidazolate)(2)]. There is worldwide interest in the effective capture and storage of radioiodine, as it is both produced from nuclear fuel reprocessing and also commonly released in nuclear reactor accidents. Insights from multiple complementary experimental and computational probes were combined to locate I-2 molecules crystallographically inside the sodalite cages of ZIF-8 and to understand the capture of I-2 via bonding with the framework These structural tools included high-resolution synchrotron powder X-ray diffraction, pair distribution function analysis, and molecular modeling simulations. Additional tests indicated that extruded ZIF-8 pellets perform on par with ZIF-8 powder and are industrially suitable for I-2 capture.

引用

页码：12398 / 12401

页数：4

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