Molecular storage of ozone in a clathrate hydrate: an attempt at preserving ozone at high concentrations.
basic_science · Level V
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- Record sourced from PubMed, PMID 23139794.
- Also identified by DOI 10.1371/journal.pone.0048563 and PMC identifier PMC3489668.
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Abstract
This paper reports an experimental study of the formation of a mixed O(3)+ O(2)+ CO(2) hydrate and its frozen storage under atmospheric pressure, which aimed to establish a hydrate-based technology for preserving ozone (O(3)), a chemically unstable substance, for various industrial, medical and consumer uses. By improving the experimental technique that we recently devised for forming an O(3)+ O(2)+ CO(2) hydrate, we succeeded in significantly increasing the fraction of ozone contained in the hydrate. For a hydrate formed at a system pressure of 3.0 MPa, the mass fraction of ozone was initially about 0.9%; and even after a 20-day storage at -25°C and atmospheric pressure, it was still about 0.6%. These results support the prospect of establishing an economical, safe, and easy-to-handle ozone-preservation technology of practical use.