Abstract
High-pressure differential thermal analysis results are used to describe dehydroxylation reactions for the clay materials of kaolinite, Na-rich montmorillonite, and K-, Ca-, and Mg-exchanged montmorillonite. Sealed capsules may be used to contain fluids and it is possible to evaluate the role of H2O in these reactions. Furthermore, structural information is used with DTA data to develop atomistic models to understand these processes.
Zusammenfassung
Ergebnisse der Hochdruck-DTA werden zur Beschreibung der Dehydroxylierungsreaktionen der Tonmaterialien von Kaolinit, Na-reichem Montmorillonit und K-, Ca- und Mg-ausgetauschtem Montmorillonit verwendet. Verschlossene Kapseln können verwendet werden, um Fluids zu enthalten und es ist möglich, die Rolle des Wassers in diesen Reaktionen aufzuzeigen. Weiterhin werden Strukturinformationen zusammen mit DTA-Daten verwendet, um atomistische Modelle zum Verständnis dieser Prozesse zu entwickeln.
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Support for this work was provided by the Petroleum Research Fund of the American Chemical Society under grants #21974-AC8-C and 20016-AC2, and the National Science Foundation under grants #EAR-9003688 and EAR-8816898.
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Guggenheim, S., van Groos, A.F.K. High-pressure differential thermal analysis (HP-DTA). Journal of Thermal Analysis 38, 2529–2548 (1992). https://doi.org/10.1007/BF01974630
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DOI: https://doi.org/10.1007/BF01974630