Clays and Clay Minerals, Vol. 60, No. 3, 254–264, 2012.
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Authors
Supronowicz, Wojciech
Roessner, Frank
Schwieger, Wilhelm
Meilikhov, Mikhail
Esken, Daniel
Issue Date
2012
Type
Article
Language
Keywords
Periodicals , Geology , H2-TPR , Magadiite , 29Si MAS NMR , Textural Properties , Tin Silicate , XRD
Alternative Title
Synthesis And Properties Of Sn-containing Magadiite
Abstract
Hydrothermal syntheses of the magadiite, a layered silicate structure, were conducted in the presence of a heteroatom source (SnCl4 · 5H2O) with the intention of investigating its influence on the resulting material, as well as the possibility of isomorphous replacement of Si by Sn atoms in the abovementioned structure. For comparison, unmodified magadiite, Al-containing magadiite, and impregnated magadiite were synthesized. The magadiite structure was identified for samples with Sn/Si ratios up to 0.015. Synthetic methods applied to Sn-modified materials were found to be unsuitable for the introduction of Al. The characterization methods used were X-ray diffraction, temperature-programmed reduction, and 29Si magic angle spinning nuclear magnetic resonance and these revealed the substitution of Si by Sn in the silica layers. No additional acid centers on the surfaces of the modified samples were detected, suggesting the presence of the desired four-coordinate Sn in the silica layers.
Description
gsccm60303-sup.pdf -- 1,219KB
Citation
Clays and Clay Minerals, Vol. 60, No. 3, 254–264, 2012.
Publisher
The Clay Minerals Society
License
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