Micro- and macroscopic observations of the nucleation process and crystal growth of nanosized Cs-pollucite in an organotemplate-free hydrosol
The nucleation and crystal growth of a nanoscale cesium pollucite aluminosilicate zeolite (ANA topology) from an organotemplate-free precursor suspension are reported. By using a new and reactive synthesis recipe (5.5SiO2 : 1Al2O3 : 6Cs2O : 140H2O), zeolite nanocrystals with higher Al content (Si/Al...
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| Format: | Article |
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Royal Society of Chemistry
2019
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| author | Ng, Eng Poh Mohammad S., Aleid Ghadah Rigolet, Severinne Daou, T. Jean Mintova, Svetlana Ling, Tau Chuan |
| author_facet | Ng, Eng Poh Mohammad S., Aleid Ghadah Rigolet, Severinne Daou, T. Jean Mintova, Svetlana Ling, Tau Chuan |
| author_sort | Ng, Eng Poh |
| collection | UM |
| description | The nucleation and crystal growth of a nanoscale cesium pollucite aluminosilicate zeolite (ANA topology) from an organotemplate-free precursor suspension are reported. By using a new and reactive synthesis recipe (5.5SiO2 : 1Al2O3 : 6Cs2O : 140H2O), zeolite nanocrystals with higher Al content (Si/Al ratio = 2.12) are obtained within 120 min under mild conditions (180 °C), which is much faster and safer as compared to those previously reported. The solid initially experiences amorphous phase re-organization before nucleation, crystallization and crystal growth take place. The resulting Cs-pollucite nanocrystals (average size 55 nm) display a trapezohedron morphology. The nanocrystals are colloidally stabilized in water and they are very active in the base-catalyzed cyanoethylation of dipropylamine reaction, giving 89.6% conversion at 180 °C within 50 min. In addition, a high solid yield of nanocrystals (ca. 70%) is also achieved, thus offering a green pathway for synthesizing zeolite nanocrystals with high basicity on a large scale. © 2019 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique. |
| first_indexed | 2024-03-06T06:01:04Z |
| format | Article |
| id | um.eprints-23850 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T06:01:04Z |
| publishDate | 2019 |
| publisher | Royal Society of Chemistry |
| record_format | dspace |
| spelling | um.eprints-238502020-02-20T01:03:21Z http://eprints.um.edu.my/23850/ Micro- and macroscopic observations of the nucleation process and crystal growth of nanosized Cs-pollucite in an organotemplate-free hydrosol Ng, Eng Poh Mohammad S., Aleid Ghadah Rigolet, Severinne Daou, T. Jean Mintova, Svetlana Ling, Tau Chuan Q Science (General) QD Chemistry QR Microbiology The nucleation and crystal growth of a nanoscale cesium pollucite aluminosilicate zeolite (ANA topology) from an organotemplate-free precursor suspension are reported. By using a new and reactive synthesis recipe (5.5SiO2 : 1Al2O3 : 6Cs2O : 140H2O), zeolite nanocrystals with higher Al content (Si/Al ratio = 2.12) are obtained within 120 min under mild conditions (180 °C), which is much faster and safer as compared to those previously reported. The solid initially experiences amorphous phase re-organization before nucleation, crystallization and crystal growth take place. The resulting Cs-pollucite nanocrystals (average size 55 nm) display a trapezohedron morphology. The nanocrystals are colloidally stabilized in water and they are very active in the base-catalyzed cyanoethylation of dipropylamine reaction, giving 89.6% conversion at 180 °C within 50 min. In addition, a high solid yield of nanocrystals (ca. 70%) is also achieved, thus offering a green pathway for synthesizing zeolite nanocrystals with high basicity on a large scale. © 2019 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique. Royal Society of Chemistry 2019 Article PeerReviewed Ng, Eng Poh and Mohammad S., Aleid Ghadah and Rigolet, Severinne and Daou, T. Jean and Mintova, Svetlana and Ling, Tau Chuan (2019) Micro- and macroscopic observations of the nucleation process and crystal growth of nanosized Cs-pollucite in an organotemplate-free hydrosol. New Journal of Chemistry, 43 (44). pp. 17433-17440. ISSN 1144-0546, DOI https://doi.org/10.1039/c9nj03151k <https://doi.org/10.1039/c9nj03151k>. https://doi.org/10.1039/c9nj03151k doi:10.1039/c9nj03151k |
| spellingShingle | Q Science (General) QD Chemistry QR Microbiology Ng, Eng Poh Mohammad S., Aleid Ghadah Rigolet, Severinne Daou, T. Jean Mintova, Svetlana Ling, Tau Chuan Micro- and macroscopic observations of the nucleation process and crystal growth of nanosized Cs-pollucite in an organotemplate-free hydrosol |
| title | Micro- and macroscopic observations of the nucleation process and crystal growth of nanosized Cs-pollucite in an organotemplate-free hydrosol |
| title_full | Micro- and macroscopic observations of the nucleation process and crystal growth of nanosized Cs-pollucite in an organotemplate-free hydrosol |
| title_fullStr | Micro- and macroscopic observations of the nucleation process and crystal growth of nanosized Cs-pollucite in an organotemplate-free hydrosol |
| title_full_unstemmed | Micro- and macroscopic observations of the nucleation process and crystal growth of nanosized Cs-pollucite in an organotemplate-free hydrosol |
| title_short | Micro- and macroscopic observations of the nucleation process and crystal growth of nanosized Cs-pollucite in an organotemplate-free hydrosol |
| title_sort | micro and macroscopic observations of the nucleation process and crystal growth of nanosized cs pollucite in an organotemplate free hydrosol |
| topic | Q Science (General) QD Chemistry QR Microbiology |
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