Characterization of light and heavy hydrated magnesium carbonates using thermal analysis
Upon heating, hydrated magnesium carbonates (HMCs) undergo a continuous sequence of decomposition reactions. This study aims to investigate the thermal decomposition of various commercially produced HMCs classified as light and heavy, highlight their differences, and provide an insight into their co...
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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Springer Netherlands
2016
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| Online Access: | http://hdl.handle.net/1721.1/103139 |
| _version_ | 1826209445537906688 |
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| author | Al-Tabbaa, A. Unluer, Cise |
| author2 | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Al-Tabbaa, A. Unluer, Cise |
| author_sort | Al-Tabbaa, A. |
| collection | MIT |
| description | Upon heating, hydrated magnesium carbonates (HMCs) undergo a continuous sequence of decomposition reactions. This study aims to investigate the thermal decomposition of various commercially produced HMCs classified as light and heavy, highlight their differences, and provide an insight into their compositions in accordance with the results obtained from thermal analysis and microstructure studies. An understanding of the chemical compositions and microstructures, and a better knowledge of the reactions that take place during the decomposition of HMCs were achieved through the use of SEM, XRD, and TG/differential thermal analysis (DTA). The quantification of their CO[subscript 2] contents was provided by TG and dissolving the samples in HCl acid. Results show that variations exist within the microstructure and decomposition patterns of the two groups of HMCs, which do not exactly fit into the fixed stoichiometry of the known HMCs in the MgO–CO[subscript 2]–H[subscript 2]O system. The occurrence of an exothermic DTA peak was only observed for the heavy HMCs, which was attributed to their high CO[subscript 2]2 contents and the relatively delayed decomposition pattern. |
| first_indexed | 2024-09-23T14:22:37Z |
| format | Article |
| id | mit-1721.1/103139 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T14:22:37Z |
| publishDate | 2016 |
| publisher | Springer Netherlands |
| record_format | dspace |
| spelling | mit-1721.1/1031392022-09-29T09:04:31Z Characterization of light and heavy hydrated magnesium carbonates using thermal analysis Al-Tabbaa, A. Unluer, Cise Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Unluer, Cise Upon heating, hydrated magnesium carbonates (HMCs) undergo a continuous sequence of decomposition reactions. This study aims to investigate the thermal decomposition of various commercially produced HMCs classified as light and heavy, highlight their differences, and provide an insight into their compositions in accordance with the results obtained from thermal analysis and microstructure studies. An understanding of the chemical compositions and microstructures, and a better knowledge of the reactions that take place during the decomposition of HMCs were achieved through the use of SEM, XRD, and TG/differential thermal analysis (DTA). The quantification of their CO[subscript 2] contents was provided by TG and dissolving the samples in HCl acid. Results show that variations exist within the microstructure and decomposition patterns of the two groups of HMCs, which do not exactly fit into the fixed stoichiometry of the known HMCs in the MgO–CO[subscript 2]–H[subscript 2]O system. The occurrence of an exothermic DTA peak was only observed for the heavy HMCs, which was attributed to their high CO[subscript 2]2 contents and the relatively delayed decomposition pattern. 2016-06-16T23:08:36Z 2016-06-16T23:08:36Z 2013-06 2012-11 2016-05-23T12:08:08Z Article http://purl.org/eprint/type/JournalArticle 1388-6150 1588-2926 http://hdl.handle.net/1721.1/103139 Unluer, C., and A. Al-Tabbaa. “Characterization of Light and Heavy Hydrated Magnesium Carbonates Using Thermal Analysis.” Journal of Thermal Analysis and Calorimetry 115.1 (2014): 595–607. en http://dx.doi.org/10.1007/s10973-013-3300-3 Journal of Thermal Analysis and Calorimetry Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. Akadémiai Kiadó, Budapest, Hungary application/pdf Springer Netherlands Springer Netherlands |
| spellingShingle | Al-Tabbaa, A. Unluer, Cise Characterization of light and heavy hydrated magnesium carbonates using thermal analysis |
| title | Characterization of light and heavy hydrated magnesium carbonates using thermal analysis |
| title_full | Characterization of light and heavy hydrated magnesium carbonates using thermal analysis |
| title_fullStr | Characterization of light and heavy hydrated magnesium carbonates using thermal analysis |
| title_full_unstemmed | Characterization of light and heavy hydrated magnesium carbonates using thermal analysis |
| title_short | Characterization of light and heavy hydrated magnesium carbonates using thermal analysis |
| title_sort | characterization of light and heavy hydrated magnesium carbonates using thermal analysis |
| url | http://hdl.handle.net/1721.1/103139 |
| work_keys_str_mv | AT altabbaaa characterizationoflightandheavyhydratedmagnesiumcarbonatesusingthermalanalysis AT unluercise characterizationoflightandheavyhydratedmagnesiumcarbonatesusingthermalanalysis |