Wong, Siew Fang and Deekomwong, Krittanun and Wittayakun, Jatuporn and Ling, Tau Chuan and Muraza, Oki and Adam, Farook and Ng, Eng Poh (2017) Crystal growth study of K-F nanozeolite and its catalytic behavior in Aldol condensation of benzaldehyde and heptanal enhanced by microwave heating. Materials Chemistry and Physics, 196. pp. 295-301. ISSN 0254-0584, DOI https://doi.org/10.1016/j.matchemphys.2017.04.061.
Full text not available from this repository.Abstract
An investigation of nanosized potassium aluminosilicate F-type zeolite (K-F, structure code EDI) converted from rice husk ash (RHA) is reported. The crystallization process was studied in an organic template-free system under microwave radiation at 100 °C and the evolution was followed by spectroscopy and microscopy techniques. The study indicated that the crystallization rate of K-F zeolite was significantly enhanced using microwave radiation. The zeolite started to nucleate at 0.5 min and flattened cuboid shaped K-F zeolite crystals (ca. 39 nm, Si/Al = 1.26) were formed after 2 min onwards. The nanocrystalline K-F zeolite exhibited good catalytic performance in solvent-free Aldol condensation reaction between benzaldehyde and heptanal, with ca. 75% reactant conversion and ca. 67% jasminaldehyde selectivity even after fifth cycle of reaction.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | K-F, Nanozeolite; Template-free synthesis; Microwave synthesis; Base catalyst |
| Subjects: | Q Science > Q Science (General) Q Science > QH Natural history |
| Divisions: | Faculty of Science > Institute of Biological Sciences |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 21 Oct 2019 08:08 |
| Last Modified: | 21 Oct 2019 08:08 |
| URI: | http://eprints.um.edu.my/id/eprint/22785 |
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