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Characterization of Nanosized Material Extracted from Clear Suspensions for MFI Zeolite Synthesis
Abstract
The silica species contained in an aged clear suspension, which upon heating gives rise to the crystallization of Silicalite-1, were extracted with 80% efficiency using a sequence of acidification, salting out, phase transfer into organic solvent, and freeze-drying methods. This silica powder was characterized by X-ray scattering, transmission electron microscopy, atomic force microscopy, and 29 Si magic angle spinning nuclear magnetic resonance. These techniques gave evidence for the presence of a very specific morphology, corresponding to slab shaped particles, with dimensions of 1.3 × 4.0 × 4.0 nm. The nanoslabs have the MFI structure with nine channel intersections per particle, each containing a TPA cation. The identity of the extracted nanoslabs with the species in suspension is evidenced with in situ and ex situ X-ray scattering.
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Cited by
The hydrothermal synthesis of zeolites: Precursors, intermediates and reaction mechanism
Cundy, C. S., & Cox, P. A. (2005) · Microporous and Mesoporous Materials · doi:10.1016/j.micromeso.2005.02.016 · Cited by 1,590
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
New Stories of Zeolite Structures: Their Descriptions, Determinations, Predictions, and Evaluations
Li, Y., & Yu, J. (2014) · Chemical Reviews · doi:10.1021/cr500010r · Cited by 603
Fan, W., Duan, R.-G., Yokoi, T., Wu, P., Kubota, Y., & Tatsumi, T. (2008) · Journal of the American Chemical Society · doi:10.1021/ja7100399 · Cited by 403
Metadata
- Authors
- Ravishankar, R., Kirschhock, C. E. A., Knops-Gerrits, P.-P., Feijen, E. J. P., Grobet, P. J., Vanoppen, P., De Schryver, F. C., Miehe, G., Fuess, H., Schoeman, B. J., Jacobs, P. A., & Martens, J. A.
- Venue
- The Journal of Physical Chemistry B
- Publisher
- American Chemical Society (ACS)
- Published
- 1999-05-27
- Volume
- 103
- Issue
- 24
- Pages
- 4960-4964
- ISSN
- 1520-5207 (ISSN-L)
- 1520-6106
- OpenAlex
- W1980770687
- Cited by
- 214
- References
- 0
- FWCI
- 7.46
- Type
- journal article
- Language
- en
- Open access
- closed
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- Ravishankar, R., Kirschhock, C. E. A., Knops-Gerrits, P.-P., Feijen, E. J. P., Grobet, P. J., Vanoppen, P., De Schryver, F. C., Miehe, G., Fuess, H., Schoeman, B. J., Jacobs, P. A., & Martens, J. A. (1999). Characterization of Nanosized Material Extracted from Clear Suspensions for MFI Zeolite Synthesis. The Journal of Physical Chemistry B. https://doi.org/10.1021/jp990296z
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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