The acid properties of the Ca/NaY zeolite were investigated by means ofn-butylamine desorption and thermal decomposition, using both thermogravimetry (TG) and differential scanning calorimetry (DSC).
The total acidity of the zeolite was calculated from the TG data, while DSC was used with the Borchardt-Daniels kinetic model
to determine the relative acid strength of the catalyst, given in J per acid site. The enthalpies of these processes are proportional
to the acid site strength in each specific temperature range.