Synthesis and characterization of the new cyclosilicate hydrate (hexamethyleneimine)(4)center dot[Si8O16(OH)(4)]center dot 12H(2)O
(2010) Microporous and Mesoporous Materials — Vol. 130, n° 1-3, p. 14-20 (2010)
Files
pdfdocument.pdf
Restricted Access - Adobe PDF
- 981.7 KB
Details
- Authors
- Abstract
- A new cyclosilicate hydrate with composition (C6H14N)(4)center dot[Si8O16(OH)(4)]center dot 12H(2)O was crystallized and the structure determined by single-crystal X-ray diffraction. The structure, described by the tetragonal space group I4(1)/a, with unit cell dimensions of a = 39.2150(2) angstrom and c = 14.1553(2) angstrom, contains columns of hydrogen-bonded cubic octamer silicate anions. The space between silicate columns holds hydrogen-bonded water and protonated hexamethyleneimine molecules compensating the negative charge of the silicate. The crystal water can be removed resulting in a rearrangement of the columns into ortho-rhombic symmetry. Removal of the organic moiety causes amorphisation. Flash evacuation results in a new microporous material with pore volumes typical of a zeolite. (C) 2009 Elsevier Inc. All rights reserved.
- Affiliations
Citations
Verlooy, P. L. H., Robeyns, K., Van Meervelt, L., Lebedev, O. I., Van Tendeloo, G., Martens, J. A., & Kirschhock, C. E. A. (2010). Synthesis and characterization of the new cyclosilicate hydrate (hexamethyleneimine)(4)center dot[Si8O16(OH)(4)]center dot 12H(2)O. Microporous and Mesoporous Materials, 130(1-3), 14-20. https://doi.org/10.1016/j.micromeso.2009.10.006 (Original work published 2010)