Title: Synthesis and characterization of the new cyclosilicate hydrate (hexamethyleneimine)(4)center dot[Si8O16(OH)(4)]center dot 12H(2)O
Authors: Verlooy, Pieter ×
Robeyns, Koen
Van Meervelt, Luc
Lebedev, Oleg I
Van Tendeloo, Gustaaf
Martens, Johan
Kirschhock, Christine #
Issue Date: May-2010
Publisher: Elsevier science bv
Series Title: Microporous and mesoporous materials vol:130 issue:1-3 pages:14-20
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.
ISSN: 1387-1811
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Surface Chemistry and Catalysis
Biochemistry, Molecular and Structural Biology Section
× corresponding author
# (joint) last author

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