Silver , solid-liquid distributions

Silver(i).—Group VII Donors. A study of the phase equilibria of the AgI-NaI-HzO system has previously led to the isolation of the compound AgI,NaI,3H20 194 u.v-visible spectra and X-ray powder studies indicate the formulation Na[AgI2],3H20.195 The phase transition for the system AgI-I -(KNa)N03 at 280 °C has been studied at high iodide concentrations.196 The results indicate the presence of [Agl4]3 and polynuclear species. Thermodynamic calculations on the distribution of Agl between solid or liquid (K2Ag)I and a nitrate melt have been reported.197 It was concluded... 

The amount of Ag introduced in the synthesis and its content in the phosphates depend on conditions and method of synthesis. Coprecipitation of phosphates occurs with the loss of the silver, the residual Ag remaius in the mother liquid. Mass concentration of silver in the solid is 18,5 %. The concentration of Ag in the mother liquid of phosphate IE is minimal, and effectiveness of ion-exchange is no less than 99%. For SG sample all the silver, introduced in the synthesis, distributes in a volume of phosphate, because the synthesized viscous gel dries and heats without filtering (the loss of the silver is excluded). 

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