Journal of Thermal Analysis and Calorimetry

, Volume 133, Issue 1, pp 247–254 | Cite as

Study of water in Ca-montmorillonite by thermal analysis and positron annihilation lifetime spectroscopy

  • Igor Maťko
  • Ondrej Šauša
  • Katarína Čechová
  • Karol Jesenák


The aim of this study is to characterize adsorbed liquid in montmorillonite structure for different levels of adsorption by both thermoanalytical and microstructural methods. Montmorillonite of Ca type is used for the analysis. Water desorption process occurring typically between 50 and 180 °C is analysed in details by thermogravimetric analysis. Thermal response of adsorbed water for the selected steps of desorption process is studied by differential scanning calorimetry. Corresponding characterization of free volume is performed by positron annihilation lifetime spectroscopy. An attempt to determine a correlation of characterization method results is provided.


Montmorillonite Thermogravimetric analysis DSC Positron annihilation lifetime spectroscopy 



Work was partially supported by projects VEGA 2/0127/17, VEGA 2/0157/17, APVV-16-0369 and APVV-15-0621.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2018

Authors and Affiliations

  1. 1.Institute of PhysicsSlovak Academy of SciencesBratislavaSlovakia
  2. 2.Department of Inorganic Chemistry, Faculty of Natural SciencesComenius UniversityBratislavaSlovakia

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