title: Molecular storage of ozone in a clathrate hydrate: an attempt at preserving ozone at high concentrations.
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.
authors.affiliation: Department of Mechanical Engineering, Keio University, Yokohama, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Nakajima
authors.forename: Taisuke
authors.initials: T
authors.lastname: Kudo
authors.forename: Ryo
authors.initials: R
authors.lastname: Ohmura
authors.forename: Satoshi
authors.initials: S
authors.lastname: Takeya
authors.forename: Yasuhiko H
authors.initials: YH
authors.lastname: Mori
mesh_terms: D002245:Carbon Dioxide / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D010126:Ozone / Q000737:chemistry*; D011208:Powders; D011312:Pressure; D013696:Temperature; D014867:Water / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D011208:Powders; D014867:Water; D002245:Carbon Dioxide; D010126:Ozone; D010100:Oxygen