WebApr 14, 2024 · The carbon emissions of the cement industry mainly come from the production process of cement clinker, namely, carbon dioxide generated by coal … WebSep 6, 2024 · Amorphous calcium carbonate (ACC) is the most important intermediate phase in the nucleation/crystallization process of CaCO 3, and thus the proper …
FT-IR spectra of calcium carbonate precipitates at …
WebMay 13, 2010 · In situ FTIR spectroscopy was used to study carbonate transformations during adsorption and desorption of CO 2 in K-promoted HTlc at 450 °C just after activation. It revealed one irreversible process … WebJan 1, 2024 · Using FTIR spectra, it has been observed that during the carbonation reaction, C 3 S, C 2 S, and C 3 S 2 initially form C S H which eventually decomposes and form the highly polymerized Ca-modified silica gel [16]. ... The presence of amorphous calcium carbonate (ACC) was observed in all of the carbonated calcium silicate systems except … macbook play sound through hdmi
Microdynamic changes of moisture-induced crystallization of …
WebSep 1, 2008 · Reig and group performed quantitative FTIR analysis on calcium carbonate and silica (quartz) using the constant ratio method. The group used potassium ferricynaide as standard and successfully showed the accuracy of quantifying the concentration of silica and quartz in geological samples using FTIR [10]. The same group also successfully … Web1 day ago · Polymorphic phases of calcium carbonate - vaterite and aragonite - were detected. ... FTIR and SEM-EDS. The main conclusions include the maximum chloride concentration in the splash zone was approximately 4–5 times that in the atmosphere zone after 3 months of exposure. Compared with the results of RCM at 90 d, the chloride ion … Web2 days ago · The FTIR band position and allocation of the vibrational mode are demonstrated in Table 4. The FTIR peak located in Fig. 4 (a) and (b) in the range of 987 cm-1 and 1403–1406 cm-1 are the characteristics of the C–O bending and stretching mode (carbonate groups). kitchener gis mapping