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Irreversible xenon insertion into a small-pore zeolite at moderate pressures and temperatures

Journal Article · · Nature Chemistry
DOI:https://doi.org/10.1038/nchem.1997· OSTI ID:1158896
 [1];  [2];  [3];  [4];  [5];  [2];  [6];  [5];  [1]
  1. Yonsei Univ., Seoul (Korea)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Carnegie Institution of Washington, Argonne, IL (United States)
  4. Chung-Ang Univ., Seoul (Korea)
  5. Univ. of South Carolina, Columbia, SC (United States)
  6. SLAC National Accelerator Lab., Menlo Park, CA (United States)
Pressure drastically alters the chemical and physical properties of materials and allows structural phase transitions and chemical reactions to occur that defy much of our understanding gained under ambient conditions. Particularly exciting is the high-pressure chemistry of xenon, which is known to react with hydrogen and ice at high pressures and form stable compounds. Here, we show that Ag16Al16Si24O8·16H2O (Ag-natrolite) irreversibly inserts xenon into its micropores at 1.7 GPa and 250 °C, while Ag+ is reduced to metallic Ag and possibly oxidized to Ag2+. In contrast to krypton, xenon is retained within the pores of this zeolite after pressure release and requires heat to desorb. This irreversible insertion and trapping of xenon in Ag-natrolite under moderate conditions sheds new light on chemical reactions that could account for the xenon deficiency relative to argon observed in terrestrial and Martian atmospheres.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1158896
Alternate ID(s):
OSTI ID: 1162290
Report Number(s):
LLNL-JRNL--648696
Journal Information:
Nature Chemistry, Journal Name: Nature Chemistry Journal Issue: 9 Vol. 6; ISSN 1755-4330
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (6)

Formation of xenon-nitrogen compounds at high pressure journal October 2016
Employing an Unsaturated Th 4+ Site in a Porous Thorium-Organic Framework for Kr/Xe Uptake and Separation journal April 2018
Employing an Unsaturated Th 4+ Site in a Porous Thorium-Organic Framework for Kr/Xe Uptake and Separation journal April 2018
A high pressure Raman study on confined individual iodine molecules as molecular probes of structural collapse in the AlPO 4 -5 framework journal January 2018
Room temperature O transfer from N 2 O to CO mediated by the nearest Cd( i ) ions in MFI zeolite cavities journal January 2019
New developments in micro-X-ray diffraction and X-ray absorption spectroscopy for high-pressure research at 16-BM-D at the Advanced Photon Source journal July 2015

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