Synthesis and characterisation of a stannosilicate with the structure of penkvilksite-1M
authors Lin, Z; Rocha, J
nationality International
journal MICROPOROUS AND MESOPOROUS MATERIALS
author keywords microporous; silicates; stannosilicates; synthesis; penkvilksite
keywords INITIO STRUCTURE DETERMINATION; FRAMEWORK STANNOSILICATE; HYDROTHERMAL SYNTHESIS; SILICATES; TITANOSILICATES; TUMCHAITE; POLYTYPES; TIN
abstract The hydrothermal synthesis of the small-pore framework sodium stannosilicate Na2SnSi4O11 (.) 2H(2)O (Sn-AV-14) possessing the structure of the rare titanosilicate mineral penkvilksite-1M has been reported. The synthesis of this material has been optimised and shown to be very sensitive to the composition of the precursor gel, particularly the Si and water contents. Seeding is required to obtain this phase. The framework of Sn-AV-14 consists Of [Si4O11] silicate sheets (arising from the combination of spiral chains formed by corner-sharing SiO4 tetrahedra) interconnected by SnO6 octahedra. Narrow six-ring channels run along [010] and [001], housing Na+ and water molecules. Sn-AV-14 materials have been studied by bulk chemical analysis, powder X-ray diffraction, scanning electron microscopy, Na-23, Si-29 and Sn-119 magic-angle spinning NMR, Fourier transformed infrared spectroscopy and thermogravimetry. (c) 2006 Elsevier Inc. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 1387-1811
year published 2006
volume 94
issue 1-3
beginning page 173
ending page 178
digital object identifier (doi) 10.1016/j.micromeso.2006.03.042
web of science category Chemistry, Applied; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
subject category Chemistry; Science & Technology - Other Topics; Materials Science
unique article identifier WOS:000240279200022
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