Ultrafast synthesis of hierarchical zeolite FAU by microwave heating

Document Type : Research Paper

Authors

Research Laboratory of Nanoporous Materials, Faculty of Chemistry, Iran University of Science and Technology, Tehran, Iran.

Abstract

This work reports an ultrafast route for the preparation of hierarchical zeolite FAU by a combined templating-microwave heating method. An inexpensive and harmless cationic polymer polydiallyldimethylammonium chloride (PolyDADMAC) was used as a mesoporogen agent. Several characterization techniques such as X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), energy dispersive X-ray (EDX) spectroscopy and N2 sorption analysis confirmed the successful synthesis of hierarchical zeolite FAU with both inter and intra-crystalline mesopores. The effects of microwave heating times and polymer quantities on the structural properties of the final product were evaluated. A crystallization time of 180 minutes and microwave radiation at 90 ͦC proved to be adequate to obtain the best product. Microwave heating resulted in the formation of nanozeolite crystallites with mesopores between them and polymer removal through calcination created mesopores inside the zeolite crystals.

Keywords

References

1. Koohsaryan E, Anbia M. Nanosized and hierarchical zeolites: A short review. Chinese Journal of Catalysis. 2016;37(4):447-67.
2. Sheykholeslami SO, Etminanfar M, Khalil-Allafi J. Toward a facile synthesis of spherical sub-micron mesoporous silica: Effect of surfactant concentration. Journal of Ultrafine Grained and Nanostructured Materials. 2020 Jun 1;53(1):31-8.
3. García-Martínez J, Li K, Krishnaiah G. A mesostructured Y zeolite as a superior FCC catalyst – from lab to refinery. Chemical Communications. 2012;48(97):11841.
4. Hui KS, Chao CYH. Pure, single phase, high crystalline, chamfered-edge zeolite 4A synthesized from coal fly ash for use as a builder in detergents. Journal of Hazardous Materials. 2006;137(1):401-9.
5. Hu Y, Liu C, Zhang Y, Ren N, Tang Y. Microwave-assisted hydrothermal synthesis of nanozeolites with controllable size. Microporous and Mesoporous Materials. 2009;119(1-3):306-14.
6. Azzolina Jury F, Polaert I, Estel L, Pierella LB. Enhancement of synthesis of ZSM-11 zeolite by microwave irradiation. Microporous and Mesoporous Materials. 2014;198:22-8.
7. Jin H, Bismillah Ansari M, Park S-E. Mesoporous MFI zeolites by microwave induced assembly between sulfonic acid functionalized MFI zeolite nanoparticles and alkyltrimethylammonium cationic surfactants. Chemical Communications. 2011;47(26):7482.
8. Singh S, Gupta D, Jain V, Sharma AK. Microwave Processing of Materials and Applications in Manufacturing Industries: A Review. Materials and Manufacturing Processes. 2015;30(1):1-29.
9. Inayat A, Knoke I, Spiecker E, Schwieger W. Assemblies of Mesoporous FAU-Type Zeolite Nanosheets. Angewandte Chemie International Edition. 2012;51(8):1962-5.
10. Chen C, Kim S-S, Cho W-S, Ahn W-S. Polyethylenimine-incorporated zeolite 13X with mesoporosity for post-combustion CO2 capture. Applied Surface Science. 2015;332:167-71.
11. Liu S, Cao X, Li L, Li C, Ji Y, Xiao F-S. Preformed zeolite precursor route for synthesis of mesoporous X zeolite. Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2008;318(1-3):269-74.
12. Zhao J, Yin Y, Li Y, Chen W, Liu B. Synthesis and characterization of mesoporous zeolite Y by using block copolymers as templates. Chemical Engineering Journal. 2016;284:405-11.
13. Gómez JM, Díez E, Bernabé I. Deoxygenation of m-toluic acid over hierarchical x zeolite. Catalysis Communications. 2016;78:55-8.
14. Möller K, Bein T. Mesoporosity – a new dimension for zeolites. Chemical Society Reviews. 2013;42(9):3689.
15. Serrano DP, Aguado J, Escola JM. Hierarchical zeolites: materials with improved accessibility and enhanced catalytic activity. Catalysis: Royal Society of Chemistry. p. 253-83.
16. Shi Y, Xing E, Gao X, Liu D, Xie W, Zhang F, et al. Topology reconstruction from FAU to MWW structure. Microporous and Mesoporous Materials. 2014;200:269-78.
17. Anbia M, Koohsaryan E, Borhani A. Novel hydrothermal synthesis of hierarchically-structured zeolite LTA microspheres. Materials Chemistry and Physics. 2017;193:380-90.
18. Morales-Pacheco P, Alvarez F, Bucio L, Domínguez JM. Synthesis and Structural Properties of Zeolitic Nanocrystals II: FAU-Type Zeolites. The Journal of Physical Chemistry C. 2009;113(6):2247-55.
19. Chen Z, Li S, Yan. Synthesis of Template-Free Zeolite Nanocrystals by Reverse Microemulsion−Microwave Method. Chemistry of Materials. 2005;17(9):2262-6.
20. Xiao F-S, Wang L, Yin C, Lin K, Di Y, Li J, et al. Catalytic Properties of Hierarchical Mesoporous Zeolites Templated with a Mixture of Small Organic Ammonium Salts and Mesoscale Cationic Polymers. Angewandte Chemie. 2006;118(19):3162-5.
21. Koohsaryan E, Anbia M. Facile and rapid synthesis of highly crystalline mesoporous zeolite FAU. Materials Letters. 2019;236:390-3.
22. Chal R, Gérardin C, Bulut M, van Donk S. Overview and Industrial Assessment of Synthesis Strategies towards Zeolites with Mesopores. ChemCatChem. 2011;3(1):67-81.
Journal of Ultrafine Grained and Nanostructured Materials
Volume 53, Issue 2
December 2020
Pages 127-134

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History

  • Receive Date: 09 July 2020
  • Revise Date: 22 October 2020
  • Accept Date: 26 October 2020

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