Title: HCl acid ionization at the surface of the stratospheric ice
Abstract: We will describe our recent theoretical work on the acid ionization of HCl at the surface of polar stratospheric cloud (PSC) ice, a reaction of importance in connection with catalytic gas-phase ozone depletion over the Antarctic. Because of the dynamic character of the ice surface under stratospheric conditions, we propose a method whereby HCl is incorporated into the ice lattice. We find that the acid ionization process at the ice surface is quite exothermic. Concomitantly, we observe that the surface does not form a quasi-liquid layer to induce ionization. However, there is some subsequent rearrangement of nearby waters to solvate the ions. Details of the acid ionization process, including rearrangements of the ice lattice, will be discussed.
Publication Year: 1996
Publication Date: 1996-10-01
Language: en
Type: article
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