The influence of mechanical activation on the nanostructure of zeolite

The influence of mechanical activation on the nanostructure of zeolite A Hungarian natural zeolite was mechanically activated by grinding in a Netzsch MiniCer stirred media mill for various activation times from 0 to 480 min. The research goal was to produce submicron-size activated zeolite with narrow particle size distribution and to investigate the energetic aspects of grinding and material characteristics. During mechanical activation (MA) the grinding energy was measured and stress energy was calculated. Additionally, the particle size distribution of the product was characterized by a Horiba 950 LA laser particle size analyzer (LPSA). Furthermore, the BET specific surface area and adsorption capacity of the MA zeolite were measured using TriStar 3000 apparatus and methylene blue adsorption test, respectively. The structural characterization of mechanically activated zeolite was carried out using Rietveld refinement on X-ray powder diffractometry data, Fourier transform infrared spectroscopy and transmission electron microscopy (TEM-EDS). TEM images and LPSA data of MA zeolite revealed the presence of particles below 100 nm. Significant amorphization, as well as the decrease in clinoptilolite phase, was found during entire MA process, while methylene blue adsorption was maintained. Finally, the relationship between grinding operating parameter (specific grinding energy) and material characteristics (amorphous content, the crystallite size of quartz and clinoptilolite) was created. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Science Springer Journals

The influence of mechanical activation on the nanostructure of zeolite

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Publisher
Springer Journals
Copyright
Copyright © 2018 by Springer Science+Business Media, LLC, part of Springer Nature
Subject
Materials Science; Materials Science, general; Characterization and Evaluation of Materials; Polymer Sciences; Continuum Mechanics and Mechanics of Materials; Crystallography and Scattering Methods; Classical Mechanics
ISSN
0022-2461
eISSN
1573-4803
D.O.I.
10.1007/s10853-018-2502-2
Publisher site
See Article on Publisher Site

Abstract

A Hungarian natural zeolite was mechanically activated by grinding in a Netzsch MiniCer stirred media mill for various activation times from 0 to 480 min. The research goal was to produce submicron-size activated zeolite with narrow particle size distribution and to investigate the energetic aspects of grinding and material characteristics. During mechanical activation (MA) the grinding energy was measured and stress energy was calculated. Additionally, the particle size distribution of the product was characterized by a Horiba 950 LA laser particle size analyzer (LPSA). Furthermore, the BET specific surface area and adsorption capacity of the MA zeolite were measured using TriStar 3000 apparatus and methylene blue adsorption test, respectively. The structural characterization of mechanically activated zeolite was carried out using Rietveld refinement on X-ray powder diffractometry data, Fourier transform infrared spectroscopy and transmission electron microscopy (TEM-EDS). TEM images and LPSA data of MA zeolite revealed the presence of particles below 100 nm. Significant amorphization, as well as the decrease in clinoptilolite phase, was found during entire MA process, while methylene blue adsorption was maintained. Finally, the relationship between grinding operating parameter (specific grinding energy) and material characteristics (amorphous content, the crystallite size of quartz and clinoptilolite) was created.

Journal

Journal of Materials ScienceSpringer Journals

Published: Jun 1, 2018

References

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