STUDIES ON THE BASIC CARBONATES OF NICKEL Part II. Hydrated Basic Nickel Carbonates

Abstract

The precipitates obtained during the addition of an alkali carbonate to an aqueous nickel salt solution under reproducible conditions of precipiration were analysed in the wet state. The influence of variation in the molar ratio of reactants on the compositions of the wet precipitates obtained at 25°C from the various systems of nickel salts and alkali carbonates was studied in detail. The formation of three basic carbonates NiCO3 Ni(OH)2xH202 NiCCs3 2Ni(OH)2xH2O and NiCO3. 3Ni (OH)2. x H2O has been observed. Even when the composition of the wet precipitate NiC03. 3Ni (OH)2 x H2O did not undergo any appreciable change, it was found that the surf.tce ares increased with time as the precipitate ayed. The surface area measurements were made by means of dye adsorption.