Local Molecular Structures Induced by Water Adsorption/Desorption in Smectite Minerals

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Title	Local Molecular Structures Induced by Water Adsorption/Desorption in Smectite Minerals
Authors	Sato, K.
ORCID
Keywords	Smectite Clay mineral Positronium
Type	Conference Papers
Date of Issue	2012
URI	http://essuir.sumdu.edu.ua/handle/123456789/35185
Publisher	Sumy State University
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Citation	Sato, K. Local Molecular Structures Induced by Water Adsorption/Desorption in Smectite Minerals / K. Sato // Nanomaterials: Applications & Properties (NAP-2012) : 2-nd International conference, Alushta, the Crimea, September 17-22, 2012 / Edited by: A. Pogrebnjak. - Sumy : Sumy State University, 2012. - V. 1, No3. - 03PCSI20
Abstract	Positronium (Ps) annihilation spectroscopy and thermogravimetry and differential thermal analysis (TG-DTA) were conducted for synthetic smectite clay minerals to investigate local molecular structures induced by water adsorption and desorption. The TG curves indicate the weight loss of ~ 3.5 wt %, ~ 2.5 wt %, and ~ 2.0 wt % for saponite, hectorite, and stevensite due to dehydration, in accordance with DTA endothermic peaks around 332 K, 350 K, and 345 K. It is found based on the results of Ps lifetime spectroscopy that the presence of angstrom-scale open space is sensitively dependent on water adsorption and desorption in smectite clay minerals. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35185
Appears in Collections:	Наукові видання (ЕлІТ)