AI Article Synopsis
- Aerosols of ozone were produced in a cooling cell and studied using FTIR spectroscopy, revealing a phase transition from vapor to liquid between 80-84 K.
- The liquid phase of ozone showed distinct spectral bands at 1038 cm(-1) and 2105 cm(-1).
- When ozone was mixed with HCl, solvated HCl was detected alongside a metastable amorphous solid form, which was produced more abundantly than the typical crystalline structure at this temperature.
Article Abstract
Aerosols of ozone have been generated in a collisional cooling cell and observed over a small temperature range via FTIR spectroscopy, with the phase transition from the vapour taking place in the range 80-84 K. The condensed phase bands at 1038 cm(-1) (nu3) and 2105 cm(-1) (nu1+nu3) were assigned to the liquid phase. Aerosols were also generated from mixtures of ozone and HCl. In the presence of liquid ozone aerosols, evidence of solvated HCl was observed via a broad IR band 2795 cm(-1). Notably, production of a metastable, amorphous solid phase of HCl (exhibiting a narrow band at 2780 cm(-1)) was favoured to the extent that it could be generated in large excess over the crystalline orthorhombic form that usually dominates at 80 K.
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| http://dx.doi.org/10.1039/b905424n | DOI Listing |
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