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The study of the conversion of intercalated compounds synthesized from a sol-gel procedure

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Abstract

Intercalated materials containing iron and carbonate species were synthesized in this work to study their hydrolysis and condensation from sol to gel transition. The former material was designated as PV (perovskite) and the latter HT (hydrotalcite). Another sample containing neither of the indicated ions was designated as AlMg(OH)5 (aluminum magnesium hydroxide). The conversion energy of these materials for the hydrolysis and condensation reaction during the transition was estimated to be ≈14 cal/mol, much lower than the hydration energy of 10–14 kcal/mol computed using molecular dynamic simulation from the previous work. The energy consumed was interpreted as equivalent to the drop of temperature due to the endothermic reaction. PV material exhibited the highest swelling ratio, amounting to 76% from its dried weight, demonstrating its ability to intercalate water readily. HT sample, on the other hand, was completely saturated and did not dilate.

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Acknowledgments

Support from the Ministry of Science, Technology and Innovation of Malaysia and Korea Science and Engineering Foundation is gratefully acknowledged. The SEM image provided by H. J. Choi and the technical input from M. H. A. R. M. Ahmad from Malaysia Nuclear Agency are greatly appreciated.

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Authors and Affiliations

  1. School of Chemical Engineering, Universiti Sains Malaysia, 14300, Nibong Tebal, Penang, Malaysia

    M. R. Othman

  2. College of Environment and Applied Chemistry, Kyung Hee University, Yongin, 449-701, South Korea

    J. Kim

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  1. M. R. Othman
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  2. J. Kim
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Correspondence to M. R. Othman or J. Kim.

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Othman, M.R., Kim, J. The study of the conversion of intercalated compounds synthesized from a sol-gel procedure. J Sol-Gel Sci Technol 47, 274–282 (2008). https://doi.org/10.1007/s10971-008-1791-3

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  • DOI: https://doi.org/10.1007/s10971-008-1791-3

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