One-pot non-template synthesis of hierarchical ZSM-5 from kaolin source |
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| Affiliation: | 1. Department of Environmental Engineering, Islamic University of Jl. Kaliurang Km. 14.5, Sleman 55584, Yogyakarta, Indonesia;2. Department of Chemistry, Faculty of Mathematics and Natural Sciences, Institut Teknologi Sepuluh Nopember, Keputih, Sukolilo, Surabaya 60111, Indonesia;3. Cardiff Catalysis Institute, Cardiff University, CF10 3AT Cardiff, United Kingdom;4. Ibnu Sina Institute for Fundamental Science Studies, Universiti Teknologi Malaysia, Skudai, Johor Bahru 81310, Malaysia;5. Department of Chemistry, Faculty of Science and Technology, Universitas Airlangga, Surabaya 60115, Indonesia;6. Diploma of Analytical Chemistry, Islamic University of Jl. Kaliurang Km. 14.5, Sleman 55584, Yogyakarta, Indonesia |
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| Abstract: | 
Hierarchical ZSM-5 was synthesized without organic template and seed-assisted from the abundant natural source, kaolin, via the facile 1-step hydrothermal process. The hierarchical structure was able to be well-controlled solely on the Na2O/Al2O3 ratio of the precursor. This method is not only simple but greener from the scientific point of view. As revealed, kaolin layered structure that dispersed in the highly alkaline NaOH medium prompts the formation of zeolite as the molecular organization is induced. The excess of NaOH acts as desilication agent after the formation of zeolite as proven by the 29Si MAS NMR data. |
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| Keywords: | Hierarchical ZSM-5 Kaolin-based ZSM-5 Hydrothermal synthesis of ZSM-5 |
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