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

Donghoon Seoung, Yongmoon Lee, Hyunchae Cynn, Changyong Park, Kwang Yong Choi, Douglas A. Blom, William J. Evans, Chi Chang Kao, Thomas Vogt, Yongjae Lee

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Abstract

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.

Original languageEnglish
Pages (from-to)835-839
Number of pages5
JournalNature chemistry
Volume6
Issue number9
DOIs
Publication statusPublished - 2014 Sep 1

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Seoung, D., Lee, Y., Cynn, H., Park, C., Choi, K. Y., Blom, D. A., Evans, W. J., Kao, C. C., Vogt, T., & Lee, Y. (2014). Irreversible xenon insertion into a small-pore zeolite at moderate pressures and temperatures. Nature chemistry, 6(9), 835-839. https://doi.org/10.1038/nchem.1997