Hydrothermal synthesis of the tin analogue of penkvilksite-2O
authors Lin, Z; Rocha, J
nationality International
journal EUROPEAN JOURNAL OF MINERALOGY
author keywords silicates; stannosilicates; penkvilksite; synthesis; solid-state NMR
keywords INITIO STRUCTURE DETERMINATION; STRUCTURAL-CHARACTERIZATION; STANNOSILICATE; NMR; TITANOSILICATES; POLYTYPES; SILICATES; OXIDES
abstract The small-pore framework stannosilicate Na2SnSi4O11.2H(2)O (Sn-AM-3), exhibiting the structure-type of the rare mineral penkvilksite-2O, has been synthesized via a seeded hydrothermal process. The estimated cell dimensions are: a = 16.52, b = 8.80, c = 7.48 angstrom. The Sn-AM-3 three-dimensional framework is made up Of [Si4O11] silicate sheets interconnected by SnO6 octahedra. The [Si4O11] silicate sheets may be described as a combination of the spiral chains formed by the comer-sharing SiO4 tetrahedra. Sn-AM-3 is the first example of a synthetic microporous stannosilicate whose structure is built up from silicate sheets. All materials were studied by bulk chemical analysis, powder X-ray diffraction, scanning electron microscopy, Si-29, Sn-119, single and triple-quantum Na-23 magic-angle spinning NMR spectroscopy and thermogravimetry. Solid-state NMR is a particularly powerful technique to establish the presence of the 1M and 2O polytypes and accurately determine their relative abundances in mixed samples.
publisher E SCHWEIZERBARTSCHE VERLAGS
issn 0935-1221
year published 2005
volume 17
issue 6
beginning page 869
ending page 873
digital object identifier (doi) 10.1127/0935-1221/2005/0017-0869
web of science category Mineralogy
subject category Mineralogy
unique article identifier WOS:000234397100010
  ciceco authors
  impact metrics
journal analysis (jcr 2019):
journal impact factor 1.665
5 year journal impact factor 1.606
category normalized journal impact factor percentile 55
dimensions (citation analysis):
altmetrics (social interaction):



 


Sponsors

1suponsers_list_ciceco.jpg