Preparation of Uniform Peanut-shaped Calcium Carbonate via Bobbling Carbonation Method
Abstract：Uniform monodisperse peanut-like CaCO3 particles with size 1.0 - 3.5 μm were prepared via batch bobbling carbonation method at temperature 35℃, specific density of Ca（OH） 2 1.05 （d）, con- centration of CO2 30% （ ω% ） and concentration of citrate 10% （ ω% ）. The obtained CaC03 samples were characterized by means of scanning electron microscope （SEM）, atomic force scanning probe microscopy （ASPM） , X-ray diffraction （XRD）,fourier transform infrared spectroscopy （FT-IR） , thermo- gravimety analysis （TG） and size analysis. The changes of pressure and viscosity with time during the carbonation process were also discussed. It was showed that, the citrate played an important role in controlling the morphology of calcium carbonate. The peanut-like calcium carbonate was assembled by a large number of nanometer particles with size 10 - 50 nm.
Keywords：peanut-like calcium carbonatepreparationbobbling carbonation methodcitrate
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 155-158 )