Structural Disorder of a New Zeolite-like Lithosilicate, K2.6Li5.4[Li4Si16O38]4.3H2O
Abstract
The framework structure of the synthetic microporous lithosilicate RUB-30 (K{sub 2.6}Li{sub 5.4}[Li{sub 4}Si{sub 16}O{sub 38}]{sub 4.3}H{sub 2}O) is similar to that of the fibrous zeolites such as natrolite, edingtonite and thomsonite, since all their frameworks include the same secondary structural building unit, the so-called 4-1 T{sub 5}O{sub 10} cluster of tetrahedra. Unique to the structure of RUB-30, each 4-1 unit consists of a LiSi4O10 moiety within which the single [LiO4] tetrahedron is strictly segregated from the other four [SiO4] tetrahedra. The connection of neighboring 4-1 units through edge-sharing [LiO4] tetrahedra results in a new framework topology. The present work reports an 'average' structure of RUB-30 solved by synchrotron X-ray single-crystal diffraction data collected at a second-generation source. A superstructure with a x 2b x c (relative to the subcell quoted above) could be seen in X-ray diffraction data collected with better resolution and higher brightness at a third generation source. Diffuse streaks along k with l = odd and unusual superstructure hkl reflections, with k = odd and l = odd only, indicate a more complicated real structure of the material. To explain this observation we propose two different structure types which are statistically, but coherently, intergrown in RUB-30.
- Authors:
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
- Sponsoring Org.:
- Doe - Office Of Science
- OSTI Identifier:
- 913995
- Report Number(s):
- BNL-78563-2007-JA
Journal ID: ISSN 0567-7408; ACBCAR; TRN: US0801459
- DOE Contract Number:
- DE-AC02-98CH10886
- Resource Type:
- Journal Article
- Journal Name:
- Acta Cryst. B
- Additional Journal Information:
- Journal Volume: 62; Journal ID: ISSN 0567-7408
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS; BRIGHTNESS; DIFFRACTION; RESOLUTION; SYNCHROTRONS; TOPOLOGY; X-RAY DIFFRACTION; ZEOLITES; NSLS; national synchrotron light source
Citation Formats
Park, S, Boysen, H, and Parise, J. Structural Disorder of a New Zeolite-like Lithosilicate, K2.6Li5.4[Li4Si16O38]4.3H2O. United States: N. p., 2006.
Web. doi:10.1107/S0108768105038784.
Park, S, Boysen, H, & Parise, J. Structural Disorder of a New Zeolite-like Lithosilicate, K2.6Li5.4[Li4Si16O38]4.3H2O. United States. https://doi.org/10.1107/S0108768105038784
Park, S, Boysen, H, and Parise, J. 2006.
"Structural Disorder of a New Zeolite-like Lithosilicate, K2.6Li5.4[Li4Si16O38]4.3H2O". United States. https://doi.org/10.1107/S0108768105038784.
@article{osti_913995,
title = {Structural Disorder of a New Zeolite-like Lithosilicate, K2.6Li5.4[Li4Si16O38]4.3H2O},
author = {Park, S and Boysen, H and Parise, J},
abstractNote = {The framework structure of the synthetic microporous lithosilicate RUB-30 (K{sub 2.6}Li{sub 5.4}[Li{sub 4}Si{sub 16}O{sub 38}]{sub 4.3}H{sub 2}O) is similar to that of the fibrous zeolites such as natrolite, edingtonite and thomsonite, since all their frameworks include the same secondary structural building unit, the so-called 4-1 T{sub 5}O{sub 10} cluster of tetrahedra. Unique to the structure of RUB-30, each 4-1 unit consists of a LiSi4O10 moiety within which the single [LiO4] tetrahedron is strictly segregated from the other four [SiO4] tetrahedra. The connection of neighboring 4-1 units through edge-sharing [LiO4] tetrahedra results in a new framework topology. The present work reports an 'average' structure of RUB-30 solved by synchrotron X-ray single-crystal diffraction data collected at a second-generation source. A superstructure with a x 2b x c (relative to the subcell quoted above) could be seen in X-ray diffraction data collected with better resolution and higher brightness at a third generation source. Diffuse streaks along k with l = odd and unusual superstructure hkl reflections, with k = odd and l = odd only, indicate a more complicated real structure of the material. To explain this observation we propose two different structure types which are statistically, but coherently, intergrown in RUB-30.},
doi = {10.1107/S0108768105038784},
url = {https://www.osti.gov/biblio/913995},
journal = {Acta Cryst. B},
issn = {0567-7408},
number = ,
volume = 62,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}