Nanostructure of CaMgSi2O6 (Diopside) and CaTiO3 (Perovskite) mechanically activated in carbon dioxide

作者：Kalinkin A M^*; Nevedomskii V N; Kalinkina E V

来源：Inorganic Materials, 2008, 44(6): 635-640.

DOI：10.1134/S0020168508060162

The micro- and nanostructure of materials resulting from mechanochemical interactions of natural diopside (CaMgSi2O6) and synthetic perovskite (CaTiO3) with CO2 have been studied by transmission electron microscopy (TEM) and high-resolution TEM. The results indicate that CO2 absorption is accompanied by CO2 "dissolution" in the form of CO32- ions in the structurally disordered silicate or titanate matrix. The diopside activation product is a quasi-homogeneous amorphous carbonate-silicate phase. The mechanically activated perovskite is a nanocomposite consisting of CaTiO3 nanocrystals embedded in a carbonated amorphous titanate matrix.

• 出版日期2008-6