The effect of sample preparation on the thermal decomposition of CaCO3

摘要: Abstract It is pointed out that many of the thermal analysis techniques commonly utilized to measure rates decomposition reactions are plagued with problems mass and energy transport limitations. Because technique employed here, dynamic X-ray diffraction (DXRD), allows for in situ observations solid reactants, intermediates, products, better control heat transfer resistance, most these obviated. Results presented which not only compare dramatic differences global reaction between TGA DXRD experiments, but also demonstrate effects sample preparation on calcite decomposition. Specifically, it shown cleaning, tends remove nucleation sites, as well de-gassing, probably removes water vapor, can lead very different rates.