Thermal stability assessment of calcium monosulfoaluminate 12-hydrate by applying the in-situ X-ray diffraction method at 25–1250 °C
Abstract In this study, the stability of synthetic calcium monosulfoaluminate and the reaction mechanism of its conversion into ye`elimite during the thermal treatment were examined. The monosulfoaluminate was produced referring to ye`elimite stoichiometry by applying the mechanochemical treatment (...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-03-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-30919-y |
| _version_ | 1797864988473294848 |
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| author | Dovile Rubinaite Tadas Dambrauskas Kestutis Baltakys Harald Hilbig Raimundas Siauciunas |
| author_facet | Dovile Rubinaite Tadas Dambrauskas Kestutis Baltakys Harald Hilbig Raimundas Siauciunas |
| author_sort | Dovile Rubinaite |
| collection | DOAJ |
| description | Abstract In this study, the stability of synthetic calcium monosulfoaluminate and the reaction mechanism of its conversion into ye`elimite during the thermal treatment were examined. The monosulfoaluminate was produced referring to ye`elimite stoichiometry by applying the mechanochemical treatment (dry grinding at 900 rpm with 3 on–off cycles of 10 min) followed by the hydrothermal synthesis (for 8 h at 110 °C). The data indicated that the prepared sample consists of Ms12 (~ 54.8%), CaCO3 (~ 1.9%), Ms10.5/Hc (~ 0.7%) and amorphous content (~ 42.6%). Meanwhile, the thermal stability assessment by in-situ XRD analysis reveals that the dehydration of monosulfoaluminate interlayer water proceeds at 25–370 °C, where four different hydration states of monosulfoaluminate are identified. Additionally, the results suggest that the removal of water molecules from the main (octahedral) layers begins at ~ 200 °C. Finally, at 700–1250 °C, the solid-state reactions between CŜ, CA and CaO are observed, generating the formation of ye`elimite. |
| first_indexed | 2024-04-09T23:01:46Z |
| format | Article |
| id | doaj.art-6f02a7685f0c459caa81db6dd65cdd18 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-09T23:01:46Z |
| publishDate | 2023-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-6f02a7685f0c459caa81db6dd65cdd182023-03-22T10:57:36ZengNature PortfolioScientific Reports2045-23222023-03-0113111110.1038/s41598-023-30919-yThermal stability assessment of calcium monosulfoaluminate 12-hydrate by applying the in-situ X-ray diffraction method at 25–1250 °CDovile Rubinaite0Tadas Dambrauskas1Kestutis Baltakys2Harald Hilbig3Raimundas Siauciunas4Department of Silicate Technology, Kaunas University of TechnologyDepartment of Silicate Technology, Kaunas University of TechnologyDepartment of Silicate Technology, Kaunas University of TechnologyProfessorship for Mineral Construction Materials, TUM School of Engineering and Design, Technical University of MunichDepartment of Silicate Technology, Kaunas University of TechnologyAbstract In this study, the stability of synthetic calcium monosulfoaluminate and the reaction mechanism of its conversion into ye`elimite during the thermal treatment were examined. The monosulfoaluminate was produced referring to ye`elimite stoichiometry by applying the mechanochemical treatment (dry grinding at 900 rpm with 3 on–off cycles of 10 min) followed by the hydrothermal synthesis (for 8 h at 110 °C). The data indicated that the prepared sample consists of Ms12 (~ 54.8%), CaCO3 (~ 1.9%), Ms10.5/Hc (~ 0.7%) and amorphous content (~ 42.6%). Meanwhile, the thermal stability assessment by in-situ XRD analysis reveals that the dehydration of monosulfoaluminate interlayer water proceeds at 25–370 °C, where four different hydration states of monosulfoaluminate are identified. Additionally, the results suggest that the removal of water molecules from the main (octahedral) layers begins at ~ 200 °C. Finally, at 700–1250 °C, the solid-state reactions between CŜ, CA and CaO are observed, generating the formation of ye`elimite.https://doi.org/10.1038/s41598-023-30919-y |
| spellingShingle | Dovile Rubinaite Tadas Dambrauskas Kestutis Baltakys Harald Hilbig Raimundas Siauciunas Thermal stability assessment of calcium monosulfoaluminate 12-hydrate by applying the in-situ X-ray diffraction method at 25–1250 °C Scientific Reports |
| title | Thermal stability assessment of calcium monosulfoaluminate 12-hydrate by applying the in-situ X-ray diffraction method at 25–1250 °C |
| title_full | Thermal stability assessment of calcium monosulfoaluminate 12-hydrate by applying the in-situ X-ray diffraction method at 25–1250 °C |
| title_fullStr | Thermal stability assessment of calcium monosulfoaluminate 12-hydrate by applying the in-situ X-ray diffraction method at 25–1250 °C |
| title_full_unstemmed | Thermal stability assessment of calcium monosulfoaluminate 12-hydrate by applying the in-situ X-ray diffraction method at 25–1250 °C |
| title_short | Thermal stability assessment of calcium monosulfoaluminate 12-hydrate by applying the in-situ X-ray diffraction method at 25–1250 °C |
| title_sort | thermal stability assessment of calcium monosulfoaluminate 12 hydrate by applying the in situ x ray diffraction method at 25 1250 °c |
| url | https://doi.org/10.1038/s41598-023-30919-y |
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