Ali Ghrear, Tamara Mahmoud and Rigolet, Severinne and Daou, T. Jean and Mintova, Svetlana and Ling, Tau Chuan and Tan, Soon Huat and Ng, Eng Poh (2019) Synthesis of Cs-ABW nanozeolite in organotemplate-free system. Microporous and Mesoporous Materials, 277. pp. 78-83. ISSN 1387-1811, DOI https://doi.org/10.1016/j.micromeso.2018.10.014.
Full text not available from this repository.Abstract
Cesium-aluminosilicate zeolite nanocrystals with ABW framework structure are synthesized free of organic template using hydrothermal approach. The crystallization process of Cs-ABW zeolite nanocrystals by varying the initial gel molar composition, heating temperature and crystallization time was studied. More detailed investigations of the formation of Cs-ABW nanozeolite using a reactive clear precursor hydrogel (4SiO2:1Al2O3:16Cs2O:160H2O) were then carried out. Fully crystalline Cs-ABW nanozeolites were obtained within 120 min at 180 °C and 22 bar, which is considerably faster and safer in comparison to the currently available method involving treatment at 695 °C, 1000 bar and 46 h. The Cs-ABW nanocrystals have grain shape morphology with a mean size of 32 nm and they do not agglomerate for long durations. The nanosized Cs-ABW zeolite has high alumina content (Si/Al ratio = 1.04). These nanocrystals can be prepared in high solid yield (ca. 82%) thus offering a promising route for large-scale production of highly basic zeolite nanoparticles.
| Item Type: | Article |
|---|---|
| Funders: | RUI (1001/PKIMIA/8011012), SATU Joint Research Scheme (RU018O-2016) |
| Uncontrolled Keywords: | Cs-ABW; Zeolite nanocrystals; Nucleation; Crystal growth; Template-free synthesis; Fast hydrothermal synthesis |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry Q Science > QH Natural history T Technology > TP Chemical technology |
| Divisions: | Faculty of Science > Institute of Biological Sciences |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 23 Jan 2019 07:03 |
| Last Modified: | 23 Jan 2019 07:03 |
| URI: | http://eprints.um.edu.my/id/eprint/20127 |
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