Research Article

Thermal Emission of Alkali Metal Ions from Al30-Pillared Montmorillonite Studied by Mass Spectrometric Method

Table 2

Activation energies of thermal ion emission.

Sample, K, K, kJ mol–1
Li+Na+K+Rb+Cs+

Al30-pillared MM (initial stage)774–805791
Al30-pillared MM (final stage)772–934841
Natural MM783–921852