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Article Dans Une Revue Applied Clay Science Année : 2018

Synthesis of iron-rich tri-octahedral clay minerals: A review

Liva Dzene
Lionel Limousy
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Christelle Martin
Nicolas Michau
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Résumé

Examples in materials science and in geology show an interest for iron-rich tri-octahedral clay mineral synthesis in large amounts and with well-defined char- acteristics. This review summarizes previously reported methods and conditions for iron-rich tri-octahedral clay mineral synthesis. Two approaches of hydrothermal synthesis have been applied: using gel or solid precursors. The most common synthesis approach is the hydrothermal synthesis using gel precursor. The synthesis of 1:1 type clay minerals were performed in reducing conditions in neutral or alkaline pH at various temperature and time ranges. The experimental conditions for 2:1 type clay mineral synthesis were in most cases similar to 1:1 type clay minerals, with in addition acidic pH and oxidizing conditions. The most commonly used methods for identifying and characterizing these minerals are X-ray diffraction, infra-red and Mössbauer spectroscopies as well as transmission electron microscopy. The thermodynamic stability of synthesized phases, as well as the reason for elements adopting a definite configuration and distribution in solid phase remain open questions.
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Dates et versions

hal-02288179 , version 1 (13-09-2019)

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Liva Dzene, Jocelyne Brendle, Lionel Limousy, Patrick Dutournie, Christelle Martin, et al.. Synthesis of iron-rich tri-octahedral clay minerals: A review. Applied Clay Science, 2018, 166, pp.276-287. ⟨10.1016/j.clay.2018.09.030⟩. ⟨hal-02288179⟩
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