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Rapid high-temperature synthesis of SAPO-34 nanoparticles

Dargahi, M ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.1016/j.partic.2011.03.007
  3. Publisher: 2011
  4. Abstract:
  5. Decreasing particle size results in larger increase of external surface area and shorter diffusion path, both reducing mass and heat transfer resistances in catalysis and sorption. A rapid high-temperature hydrothermal synthesis method was developed to synthesize uniform nanoparticles of SAPO-34 zeolite with high crystallinity. To investigate the effects of temperature and synthesis time on purity and crystallinity of the final products, the crystallization temperature was increased from 468 to 673 K while the synthesis time was decreased from 24 h to 45 min. The products were characterized by XRD and SEM techniques. It was found that high temperature and short synthesis time reduce the particle size and change the morphology of the SAPO-34 final product
  6. Keywords:
  7. SAPO-34 ; SEM ; XRD ; Crystallinities ; Crystallization temperature ; Diffusion paths ; Effects of temperature ; External surfaces ; Heat transfer resistance ; High crystallinity ; High temperature ; High-temperature synthesis ; Synthesis time ; Nanoparticles ; Sorption ; Temperature ; Hydrothermal synthesis
  8. Source: Particuology ; Volume 9, Issue 5 , October , 2011 , Pages 452-457 ; 16742001 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S1674200111000691