Siti Zubaidah Patuwan (2018) Hydrothermal synthesis of metakaolin based zeolite T with three different structure directing agents and its adsorption capacity toward carbon dioxide. Masters thesis, Universiti Malaysia Sabah.
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Abstract
Technology in carbon dioxide gas capture by synthetic zeolite material have been a breakthrough during last decades. However, many fundamental challenges in synthesis zeolite material and usually involves expensive reagents. Therefore, this work focuses in overcoming the present limitation in developing new synthesis concept for the synthesis and functionalization of zeolite T from metakaolin for carbon dioxide (CO2) adsorption. The metakaolin (Si-Al source) was a commercialized kaolin powder that undergone temperature treatment at 750 °c for four hours, followed by the preparation of zeolite mixture. Zeolite T was synthesized hydrothermally by following the molar ratio of chemical components SiO2:Al2O3:Na2O:K2O:H2O (1:0.04:0.26:0.09:14), whereas the several reaction parameters, i.e synthesis temperature, reaction time, types of structure directing agents, SDA (TMOAH, TEAOH, and TBAOH) were studied. Furthermore, the pore properties and adsorption-desorbtion of zeolite T ( correspond to different SDA) toward CO2 were investigated. Zeolite T was prepared using TMAOH and XRD pattern obtained under different TMAOH ratio (0.05 - 0.25) shows a pure crystals of rice-like zeolite T and crystallized in nano-sizes at the highest ratio of 0.25. Meanwhile, the behavior of zeolite T crystals in TEAOH resulting a co-exist system between species of zeolite T and L under range ratios of 0.05, 0.10, 0.15, and 0.20, while the species of zeolite w was obtained at the highest TEAOH ratio (0.25). System with TBAOH as SDA have led the formation of acicular crystals with negative growth of zeolite T and unstable form of zeolite L crystals at ratio 0.10 and forming poor crystallization system at remaining ratios (0.05, 0.15, 0.20, and 0.25). The pure form of zeolite T prepared at lowest ratio of 0.05 TMAOH, possessed surface area and pore size of 357. 9 m2/g and 24. 96 A respectively, shows an excellent adsorption-desorption by able to adsorbed 4893 µmol/g of CO2 and fully desorbed at temperature 907 °C.
| Item Type: | Thesis (Masters) |
|---|---|
| Keyword: | Zeolite T, CO₂ adsorption, Carbon capture technology, Metakaolin-based synthesis |
| Subjects: | T Technology > TP Chemical technology > TP1-1185 Chemical technology > TP200-248 Chemicals: Manufacture, use, etc. |
| Department: | FACULTY > Faculty of Science and Natural Resources |
| Depositing User: | DG MASNIAH AHMAD - |
| Date Deposited: | 03 Jul 2025 10:07 |
| Last Modified: | 03 Jul 2025 10:07 |
| URI: | https://eprints.ums.edu.my/id/eprint/44267 |
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