Tsapatsis, Michael and Lovallo, Mark and Okubo, Tatsuya and Davis, Mark E. and Sadakata, Masayoshi (1995) Characterization of Zeolite L Nanoclusters. Chemistry of Materials, 7 (9). pp. 1734-1741. ISSN 0897-4756. doi:10.1021/cm00057a025. https://resolver.caltech.edu/CaltechAUTHORS:20180124-111649565
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Abstract
Zeolite L (structure code LTL) crystals are synthesized starting from homogeneous potassium aluminosilicate solutions. Particle size and shape of the formed zeolite L are examined by high-resolution transmission electron microscopy, field emission-scanning electron microscopy, X-ray diffraction, and dynamic light scattering. The synthesis conditions reported lead to nanoclusters of aligned zeolite crystalline domains of dimensions ~40 nm in the channel direction and ~15 nm in the direction perpendicular to the zeolite channels. The nanoclusters have sizes of ~60 nm. Electron microscopy of the nanoclusters reveals the presence of inhomogeneities (intercrystalline porosity) on length scales ranging from 2 to 60 nm. The N_2 and cyclohexane adsorption capacities and the thermal stability of the crystals synthesized are correlated with their microstructure. The preparation of colloidal suspensions of the zeolite L nanoclusters in water is described along with their use in seeded growth and film formation.
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| Additional Information: | © 1995 American Chemical Society. Received May 11, 1995. Revised Manuscript Received June 30, 1995. Funding for this work was provided by ARCO. Acknowledgment is made to the donors of the Petroleum Research Fund, administered by the American Chemical Society, for partial support of this research. The authors would like to thank Mrs. Carole Garland for valuable assistance in the TEM, Dr. R. Lobo and Dr. J. Higgins for the acquisition of the synchrotron data, and Prof. S. Suib and Brookhaven Instruments Corp. for providing access to their experimental facilities. The synchrotron XRD data were collected at X7A beam line, National Synchrotron Light Source, Brookhaven National Laboratory, which is supported by the Department of Energy, Division of Materials Science and Division of Chemical Sciences. | |||||||||
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| Issue or Number: | 9 | |||||||||
| DOI: | 10.1021/cm00057a025 | |||||||||
| Record Number: | CaltechAUTHORS:20180124-111649565 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20180124-111649565 | |||||||||
| Official Citation: | Characterization of Zeolite L Nanoclusters. Michael Tsapatsis, Mark Lovallo, Tatsuya Okubo, Mark E. Davis, and Masayoshi Sadakata. Chemistry of Materials 1995 7 (9), 1734-1741. DOI: 10.1021/cm00057a025 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 84504 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Tony Diaz | |||||||||
| Deposited On: | 25 Jan 2018 17:17 | |||||||||
| Last Modified: | 15 Nov 2021 20:20 |
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