Clathrate hydrates for ozone preservation

Sanehiro Muromachi, Ryo Ohmura, Satoshi Takeya, Yasuhiko H. Mori

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We report the experimental evidence for the preservation of ozone (O 3) encaged in a clathrate hydrate. Although ozone is an unstable substance and is apt to decay to oxygen (O2), it may be preserved for a prolonged time if it is encaged in hydrate cavities in the form of isolated molecules. This possibility was assessed using a hydrate formed from an ozone + oxygen gas mixture coexisting with carbon tetrachloride or xenon. Each hydrate sample was stored in an air-filled container at atmospheric pressure and a constant temperature in the range between -20 and 2 °C and was continually subjected to iodometric measurements of its fractional ozone content. Such chronological measurements and structure analysis using powder X-ray diffraction have revealed that ozone can be preserved in a hydrate-lattice structure for more than 20 days at a concentration on the order of 0.1% (hydrate-mass basis).

Original languageEnglish
Pages (from-to)11430-11435
Number of pages6
JournalJournal of Physical Chemistry B
Volume114
Issue number35
DOIs
Publication statusPublished - 2010 Sep 9

Fingerprint

Ozone
clathrates
Hydrates
hydrates
ozone
Oxygen
Xenon
Carbon tetrachloride
Carbon Tetrachloride
carbon tetrachloride
oxygen
containers
Gas mixtures
X ray powder diffraction
xenon
Atmospheric pressure
Containers
gas mixtures
atmospheric pressure
cavities

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Materials Chemistry
  • Surfaces, Coatings and Films

Cite this

Clathrate hydrates for ozone preservation. / Muromachi, Sanehiro; Ohmura, Ryo; Takeya, Satoshi; Mori, Yasuhiko H.

In: Journal of Physical Chemistry B, Vol. 114, No. 35, 09.09.2010, p. 11430-11435.

Research output: Contribution to journalArticle

Muromachi, S, Ohmura, R, Takeya, S & Mori, YH 2010, 'Clathrate hydrates for ozone preservation', Journal of Physical Chemistry B, vol. 114, no. 35, pp. 11430-11435. https://doi.org/10.1021/jp105031n
Muromachi, Sanehiro ; Ohmura, Ryo ; Takeya, Satoshi ; Mori, Yasuhiko H. / Clathrate hydrates for ozone preservation. In: Journal of Physical Chemistry B. 2010 ; Vol. 114, No. 35. pp. 11430-11435.
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