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Thermogravimetric study of n-alkylammonium-intercalated montmorillonites of different cation exchange capacity

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Abstract

Three n-alkylammonium salts of varying alkyl chain length were ion exchanged with montmorillonites (MMT) of different cation exchange capacity (CEC). The intercalated MMTs were characterized by thermogravimetry (TG), XRD, FTIR to acquire an insight into the intergallery structural arrangement of the organic alkylammonium cations (AAC). The increment in the intergallery spacing from XRD pattern was correlated with chain length and interlayer arrangement of AAC. Multiple organic mass-loss stages in thermogravimetric analysis indicate two types of anchorage of AAC in intercalated clay. CEC of MMT was found to influence the intergallery confinement and excess adsorption of AAC.

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Authors and Affiliations

  1. Advanced Clay and Traditional Ceramics Division, Central Glass and Ceramic Research Institute, CSIR, Kolkata, 700032, India

    Saheli Ganguly, Kausik Dana & Sankar Ghatak

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  1. Saheli Ganguly
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  2. Kausik Dana
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  3. Sankar Ghatak
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Correspondence to Kausik Dana.

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Ganguly, S., Dana, K. & Ghatak, S. Thermogravimetric study of n-alkylammonium-intercalated montmorillonites of different cation exchange capacity. J Therm Anal Calorim 100, 71–78 (2010). https://doi.org/10.1007/s10973-009-0588-0

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  • DOI: https://doi.org/10.1007/s10973-009-0588-0

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