Co(II)-exchanged montmorillonite with ethylenediamine,trimethyl- and tetramethyl-ethylenediamine and their thermal decomposition |
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| Authors: | S Šnircová E Jóna R Janík Ľ Lajdová S Lendvayová M Loduhová V Šutinská R Durný P Lizák S C Mojumdar |
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| Institution: | 1.Department of Inorganic Materials and Environmental Engineering, Faculty of Industrial Technologies,University of Tren?ín,Púchov,Slovakia;2.Slovak Institute of Metrology,Bratislava,Slovakia;3.Department of Industrial Design, Faculty of Industrial Technologies,Trencin University of A. Dubcek,Trencin,Slovakia;4.University of New Brunswick,Fredericton,Canada;5.Department of Chemical and Biochemical Engineering,The University of Western Ontario,London,Canada |
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| Abstract: | The influence of different steric properties of ethylenediamine (EDA), trimethylenediamine (TrMeEDA) and tetraethylenediamine
(TeMeEDA) on the type of interactions with Co(II)-exchanged montmorillonite and thermal decomposition of these materials were
studied. The results of X-ray diffraction (XRD), thermogravimetry (TG), derivative thermogravimetry (DTG) and spectral analysis
shows that the studied ethylenediamines are intercalated into the interlayer space of montmorillonite. Thermal decomposition
at 20–500 °C of studied samples with EDA proceeds in three steps (the release of chemosorbed amines, coordinated EDA and dehydroxylation)
while the sample with TrMeEDA and TeMeEDA in five steps (also release the protonated forms). The effect of different steric
properties of individual diamines is evident. |
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