Synthesis and structural characterization of microporous yttrium and calcium silicates
Article Abstract:
Experiments were performed to investigate the synthesis and structural characteristics of the Aveiro microporous solid no. 1 (AV-1). AV-1 is the first artificial microporous yttrium silicate. In addition, the chemical structure of montregianite, of the rare mineral rhodesite and alkali calcium silicate hydrate AV-2 were examined. Scanning electron microscopy, magic-angle spinning nuclear magnetic spectroscopy and other analytic techniques were employed. The AV-1 and AV-2 exhibited similar double silicate layers.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Synthesis and structural characterization of microporous framework zirconium silicates
Article Abstract:
A study was conducted to analyze the preparation of synthetic analogues of the microporous zirconium silicate minerals petarasite, gaidonnayite and umbite. The solids supported corner-sharing octahedra and tetrahedra forming a three-dimensional framework. In addition, the materials were thermally stable up to, at least, 550 degrees C. Results indicated that the hydration-dehydration processes were reversible.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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