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Control of Particle Size and Surface Properties of Crystals of NaX Zeolite
Abstract
We have successfully synthesized NaX zeolite crystals with controlled sizes from 20 nm to 0.8 μm, using a novel organic-additive-free approach. We show that the NaX crystal size depends on the silicate source and hydrothermal crystallization conditions, especially crystallization temperature and agitation. The physical properties of NaX-nano (20−100 nm) were characterized by X-ray diffraction, high-resolution scanning electron microscopy, FT-IR spectroscopy, 29 Si solid-state NMR spectroscopy, and N 2 adsorption. The results were compared with those for micrometer-sized NaX crystals, NaX-μ. As expected, the external surface area of NaX-nano was found to be significantly enhanced compared with that of NaX-μ. Porosity analysis indicates that NaX-nano has a broad distribution of mesopores from 2 to 20 nm, associated with interparticle voids. Both FT-IR and 29 Si solid-state NMR spectra revealed the presence of Q 3 silicon atoms in NaX-nano. All four Q 3 species were assigned in the 29 Si NMR spectra.
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Cited by
Nanozeolites: Synthesis, Crystallization Mechanism, and Applications
Tosheva, L., & Valtchev, V. P. (2005) · Chemistry of Materials · doi:10.1021/cm047908z · Cited by 1,160
Do Geopolymers Actually Contain Nanocrystalline Zeolites? A Reexamination of Existing Results
Provis, J. L., Lukey, G. C., & van Deventer, J. S. J. (2005) · Chemistry of Materials · doi:10.1021/cm050230i · Cited by 818
Template-free nanosized faujasite-type zeolites
Awala, H., Gilson, J.-P., Retoux, R., Boullay, P., Goupil, J.-M., Valtchev, V., & Mintova, S. (2015) · Nature Materials · doi:10.1038/nmat4173 · Cited by 484
Porous Organic Cage Nanocrystals by Solution Mixing
Hasell, T., Chong, S. Y., Jelfs, K. E., Adams, D. J., & Cooper, A. I. (2012) · Journal of the American Chemical Society · doi:10.1021/ja209156v · Cited by 273
Zeolite Synthesis under Nonconventional Conditions: Reagents, Reactors, and Modi Operandi
Deneyer, A., Ke, Q., Devos, J., & Dusselier, M. (2020) · Chemistry of Materials · doi:10.1021/acs.chemmater.9b04741 · Cited by 82
Metadata
- Authors
- Zhan, B.-Z., White, M. A., Lumsden, M., Mueller-Neuhaus, J., Robertson, K. N., Cameron, T. S., & Gharghouri, M.
- Venue
- Chemistry of Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 2002-06-22
- Volume
- 14
- Issue
- 9
- Pages
- 3636-3642
- ISSN
- 0897-4756 (ISSN-L)
- 1520-5002
- OpenAlex
- W1969257680
- Cited by
- 183
- References
- 0
- FWCI
- 3.80
- Type
- journal article
- Language
- en
- Open access
- closed
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