Abstract
Nanosized zeolites with larger external surface area and decreased diffusion pathway provide many potential opportunities in adsorption, diffusion, and catalytic applications. Herein, we report a designer synthesis of ultra-fine Fe-LTL zeolite nanocrystals under very mild synthesis conditions. We prepared Fe-LTL zeolite nanocrystals synthesized using L precursor. The precursor is aging at room temperature to obtain zeolite L nuclei. In order to investigate more details of Fe-LTL zeolite nanocrystals, various characterizations including X-ray diffraction (XRD), inductively coupled plasma (ICP), diffuse reflectance ultraviolet-visible (UV-Vis) spectroscopy, confirm the tetrahedral Fe3+ species in the zeolite framework. Besides, scanning electron microscope (SEM), Fourier transform infrared spectrometer (FT-IR), dynamic light scattering (DLS) indicate that the average particle size of Fe-LTL zeolite crystals is approximately 30 nm. Thus, ultra-fine Fe-LTL zeolite with large external surface area and shorter diffusion pathway to the active sites might have great potential in the near future.
Highlights
Ion-exchangers, and catalysts have been widely used in the fields of catalysis, separations, and adsorption [1,2,3,4,5,6,7,8,9,10,11,12,13,14]
They have accelerated the development of heterogeneous catalysis and separation processes because of their large internal surface area, unique channel systems, high pore volume, and adjustable active sites
The chemical composition and pore architecture of zeolites are important, the precise control of their crystallite morphology has a significant influence on their applications in catalysis and adsorption
Summary
Ion-exchangers, and catalysts have been widely used in the fields of catalysis, separations, and adsorption [1,2,3,4,5,6,7,8,9,10,11,12,13,14]. They have accelerated the development of heterogeneous catalysis and separation processes because of their large internal surface area, unique channel systems, high pore volume, and adjustable active sites. Designer synthesis of pure zeolite nanocrystals is still challenging at present
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