Meta kaolinite: Si & Al Precursors for Kalsi lite Synthesis
Metakaolinite has been used as a silica and alumina precursor to synthesise kalsilite via the hydrothermal method with the addition of potassium hydroxide (KOH) as the potassium source. The effects of the KOH concentrations and reaction temperatures have been investigated. X-ray diffraction (XRD) di...
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| Format: | Article |
| Idioma: | English English |
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University of Chemistry and Technology, Prague
2021
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| Accés en línia: | https://eprints.ums.edu.my/id/eprint/31885/1/Meta%20kaolinite.pdf https://eprints.ums.edu.my/id/eprint/31885/2/Meta%20kaolinite1.pdf |
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| author | Eddy F. Yusslee Nur Hazwani Dahon Mohd Azrul Abd Rajak Sazmal E. Arshad |
| author_facet | Eddy F. Yusslee Nur Hazwani Dahon Mohd Azrul Abd Rajak Sazmal E. Arshad |
| author_sort | Eddy F. Yusslee |
| collection | UMS |
| description | Metakaolinite has been used as a silica and alumina precursor to synthesise kalsilite via the hydrothermal method with the addition of potassium hydroxide (KOH) as the potassium source. The effects of the KOH concentrations and reaction temperatures have been investigated. X-ray diffraction (XRD) diffractograms and field emission scanning electron microscope (FESEM) images showed the formation of hexagonal kalsilite after the hydrothermal reaction of metakaolinite at 190 °C in 1.25 M KOH for 24 hours. Kalsilite formed as a minor crystalline phase at a KOH concentration of less than 1.0 M KOH, while, at a higher KOH concentration, the crystallinity of the product increases. On the other hand, 190 °C was sufficient to convert metakaolinite to kalsilite. Besides, zeolite F and muscovite have been found as the dominant products at a lower KOH concentration and temperature, respectively. |
| first_indexed | 2024-03-06T03:14:06Z |
| format | Article |
| id | ums.eprints-31885 |
| institution | Universiti Malaysia Sabah |
| language | English English |
| last_indexed | 2024-03-06T03:14:06Z |
| publishDate | 2021 |
| publisher | University of Chemistry and Technology, Prague |
| record_format | dspace |
| spelling | ums.eprints-318852022-03-17T06:40:41Z https://eprints.ums.edu.my/id/eprint/31885/ Meta kaolinite: Si & Al Precursors for Kalsi lite Synthesis Eddy F. Yusslee Nur Hazwani Dahon Mohd Azrul Abd Rajak Sazmal E. Arshad Q1-390 Science (General) Metakaolinite has been used as a silica and alumina precursor to synthesise kalsilite via the hydrothermal method with the addition of potassium hydroxide (KOH) as the potassium source. The effects of the KOH concentrations and reaction temperatures have been investigated. X-ray diffraction (XRD) diffractograms and field emission scanning electron microscope (FESEM) images showed the formation of hexagonal kalsilite after the hydrothermal reaction of metakaolinite at 190 °C in 1.25 M KOH for 24 hours. Kalsilite formed as a minor crystalline phase at a KOH concentration of less than 1.0 M KOH, while, at a higher KOH concentration, the crystallinity of the product increases. On the other hand, 190 °C was sufficient to convert metakaolinite to kalsilite. Besides, zeolite F and muscovite have been found as the dominant products at a lower KOH concentration and temperature, respectively. University of Chemistry and Technology, Prague 2021 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/31885/1/Meta%20kaolinite.pdf text en https://eprints.ums.edu.my/id/eprint/31885/2/Meta%20kaolinite1.pdf Eddy F. Yusslee and Nur Hazwani Dahon and Mohd Azrul Abd Rajak and Sazmal E. Arshad (2021) Meta kaolinite: Si & Al Precursors for Kalsi lite Synthesis. Ceramics-Silikáty, 65. pp. 363-367. ISSN 0862-5468 https://www.irsm.cas.cz/materialy/cs_content/2021_doi/Yusslee_CS_2021_0038.pdf https://doi.org/10.13168/cs.2021.0038 https://doi.org/10.13168/cs.2021.0038 |
| spellingShingle | Q1-390 Science (General) Eddy F. Yusslee Nur Hazwani Dahon Mohd Azrul Abd Rajak Sazmal E. Arshad Meta kaolinite: Si & Al Precursors for Kalsi lite Synthesis |
| title | Meta kaolinite: Si & Al Precursors for Kalsi lite Synthesis |
| title_full | Meta kaolinite: Si & Al Precursors for Kalsi lite Synthesis |
| title_fullStr | Meta kaolinite: Si & Al Precursors for Kalsi lite Synthesis |
| title_full_unstemmed | Meta kaolinite: Si & Al Precursors for Kalsi lite Synthesis |
| title_short | Meta kaolinite: Si & Al Precursors for Kalsi lite Synthesis |
| title_sort | meta kaolinite si al precursors for kalsi lite synthesis |
| topic | Q1-390 Science (General) |
| url | https://eprints.ums.edu.my/id/eprint/31885/1/Meta%20kaolinite.pdf https://eprints.ums.edu.my/id/eprint/31885/2/Meta%20kaolinite1.pdf |
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