Synthesis and characterisation of precipitated copper(II) silicates
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Poznan University of Technology
T. Jesionowski   

Poznan University of Technology, Institute of Chemical Technology and Engineering M. Sklodowskiej-Curie 2 Sq, 60-965 Poznan, Poland
Publication date: 2010-01-01
Physicochem. Probl. Miner. Process. 2010;44(1):157–168
The study was undertaken to obtain a blue inorganic pigment of copper(II) silicate of high degree of dispersion. The process of precipitation of synthetic copper(II) silicates was optimised. The effect of the direction of dosing, percent concentration and volume ratio of the reagents, temperature and type of copper salt used on the physico-chemical properties of the products was studied. The copper(II) silicate obtained was characterised by satisfactory parameters; bulk density of 198 g/dm3, water absorbing capacity of 225 cm3/100g and paraffin oil absorbing capacity of 300 cm3/100g. The diameters of the precipitated silicates varied from 0.955 – 120.2 μm, with a dominant presence of larger particles making secondary agglomerates.