Abstract
The effects of preparation histries on the air oxidation and sulfation of cadmium sulfide precipitation were investigated by means of TG-method. The cadmium sulfides were precipitated from the aqueous solutions of various kinds of soluble cadmium salts such as CdCl2, CdSO4 or Cd(NO), by Na2S, H2S or Na2S2O2- under the fixed conditions respectively. The identification of produpts was carried out by X-ray diffraction.8-Cadmium sulfide was sulfurized to cadmium sulfate, but β-cadmium sulfide was oxidized to cadmium oxide by heating in air. i9-Cadmium sulfide containing a small amount of chloride was oxidized to cadmium oxide by heating in air.
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