Titre du document / Document title

Synthesis and characterisation of a stannosilicate with the structure of penkvilksite-1M

Auteur(s) / Author(s)

ZHI LIN ⁽¹⁾ ; ROCHA Joao ⁽¹⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Department of Chemistry, CICECO, University of Aveiro, 3810-193 Aveiro, PORTUGAL

Résumé / Abstract

The hydrothermal synthesis of the small-pore framework sodium stannosilicate Na₂SnSi₄O₁₁ · 2H₂O (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, ²³Na, ²⁹Si and ¹¹⁹Sn magic-angle spinning NMR, Fourier transformed infrared spectroscopy and thermogravimetry.

Revue / Journal Title

Microporous and mesoporous materials   ISSN 1387-1811 

Source / Source

2006, vol. 94, n^o1-3, pp. 173-178 [6 page(s) (article)] (22 ref.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Amsterdam, PAYS-BAS  (1998) (Revue)

Mots-clés anglais / English Keywords

Silicates ; Porous material ; Microporosity ; Structure ; Synthesis ;

Mots-clés français / French Keywords

Silicate ; Matériau poreux ; Microporosité ; Structure ; Synthèse ;

Mots-clés espagnols / Spanish Keywords

Silicato ; Material poroso ; Microporosidad ; Estructura ; Síntesis ;

Mots-clés d'auteur / Author Keywords

Microporous ; Silicates ; Stannosilicates ; Synthesis ; Penkvilksite ;

Localisation / Location

INIST-CNRS, Cote INIST : 19627, 35400013353934.0220