Molecular Storage of Ozone in a Clathrate Hydrate: An Attempt at Preserving Ozone at High Concentrations

This paper reports an experimental study of the formation of a mixed O3+ O2+ CO2 hydrate and its frozen storage under atmospheric pressure, which aimed to establish a hydrate-based technology for preserving ozone (O3), a chemically unstable substance, for various industrial, medical and consumer uses. By improving the experimental technique that we recently devised for forming an O3+ O2+ CO2 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.

本论文报道了一项针对O₃+O₂+CO₂混合水合物（hydrate）的生成及其常压（atmospheric pressure）冷冻储存的实验研究，旨在开发一种基于水合物的保存技术，用于储存化学性质不稳定的臭氧（O₃），以满足工业、医疗及民用等多领域的应用需求。本研究优化了我们近期提出的O₃+O₂+CO₂混合水合物合成实验方法，成功大幅提升了水合物中臭氧的质量分数。当体系压力为3.0 MPa时，合成所得水合物的初始臭氧质量分数约为0.9%；即便在-25℃、常压条件下储存20天后，其臭氧质量分数仍可维持在约0.6%。上述实验结果验证了开发经济、安全且易操作的实用型臭氧保存技术的可行性。