After the thermal treatment of a smectite clay is it possible that the structural water which is removed with heat be linked back to the structure?

04 April 2014 1 6K Report

When the sample stays open at room temperature.

If the structure is maintained the clay which has a large internal surface area will greedily take up water again. It's however difficult to predict the take up quantitatively, this depends on the type of smectite (montmorillionite wil take up water into the interlayer) , its grain size, the temperature, moisture content of the surrounding air and the calcination temperature of the clay. If you want to prevent water takeup of your sample put into a desiccator.

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