Abstract
It is known that Freons can be destructively adsorbed by magnesium and calcium oxides under the effect of mild ultraviolet radiation. Insofar as these oxides along with the silicon, aluminum, and iron oxides are typical components of solid troposheric aerosols, photo-and dark adsorption processes may represent an efficient channel of the Freon removal from the atmosphere. In this work, dark adsorption of Freon-22 on aluminum and magnesium oxides, which were treated in a vacuum at room temperature, is studied. Experiments with the specimens that have been exposed to air for a long time are especially important in estimating the probable adsorption of a Freon on aluminum or magnesium oxide under conditions close to the tropospheric ones.
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