Ni-exchanged montmorillonite with methyl-, dimethyl- and trimethylamine and their thermal properties |
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| Authors: | S Šnircová E Jóna L’ Lajdová V Jorik M Drábik M Pajtášová D Ondrušová S C Mojumdar |
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| Institution: | S. Šnircová, E. Jóna, L’. Lajdová, V. Jorik, M. Drábik, M. Pajtášová, D. Ondrušová and S. C. Mojumdar |
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| Abstract: | The influence of different steric properties of methylamine (MA), dimethylamine (DIMA) and trimethylamine (TRMA) on the type
of interactions with Ni-exchanged montmorillonite and thermal properties of these materials were studied. The results of diffraction,
spectral (IR) and thermal (TG, DTG) analysis show that MA, DIMA and TRMA are intercalated into the interlayer space of montmorillonite.
Thermal decomposition in the temperature interval 20–450°C of studied samples with MA and DIMA proceeds in three steps (the
release of chemisorbed amines, coordinated amines and alkylammonium cations) while the sample with TRMA decompose only in
two steps (the peak corresponds to the release of coordinated TRMA is absent). The effect of different steric properties of
individual amines is evident. |
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| Keywords: | methyl- dimethyl- and trimethylamines Ni-exchanged montmorillonite thermal decomposition |
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