Synthesis and in situ transformation of PST-1: a potassium gallosilicate natrolite with a high Ga content
SCIE
SCOPUS
- Title
- Synthesis and in situ transformation of PST-1: a potassium gallosilicate natrolite with a high Ga content
- Authors
- Shin, J; Kim, SH; Camblor, MA; Warrender, SJ; Miller, SR; Zhou, WZ; Wright, PA; Hong, SB
- Date Issued
- 2010-01
- Publisher
- Royal Society of Chemistry
- Abstract
- The synthetic details of a novel potassium gallosilicate natrolite with Si/Ga = 1.28, denoted PST-1, are described. The presence of K+ and Ga with well-defined levels of concentration in the synthesis mixture is essential for directing its crystallisation. PST-1 transforms rapidly into TNU-6 under hydrothermal conditions, behaviour that contrasts sharply with its very high thermal and hydrothermal stability, which is unusual for a material of such a high Ga content. These stability issues are discussed and rationalized based on chemical composition, likely violations of Loewenstein's rule and the temperature of dehydration of as-made K-PST-1. The crystal structure of TNU-6 has been resolved through the combined use of synchrotron X-ray and electron diffraction data; it has the BaFeGaO4 structure type with an additional root 3a x root 3a "GeAlO4" superstructure that arises from tilting of some of the tetrahedral units in all of the 6-rings.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/10083
- DOI
- 10.1039/b920540n
- ISSN
- 1477-9226
- Article Type
- Article
- Citation
- DALTON TRANSACTIONS, vol. 39, no. 9, page. 2246 - 2253, 2010-01
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