Irreversible xenon insertion into a small-pore zeolite at moderate pressures and temperatures
- Yonsei Univ., Seoul (Korea)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Carnegie Institution of Washington, Argonne, IL (United States)
- Chung-Ang Univ., Seoul (Korea)
- Univ. of South Carolina, Columbia, SC (United States)
- 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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