2. Experimental
2.1. Catalyst modification and characterization
2.1.1. Physical modification by mixing via ultrasonication
Parent H-Mordenite (H-Mor) and Na-Beta nanozeolites are
purchased from Su¨ d Chemie AG, Mu¨ nchen, Germany. HBeta
was prepared from Na-Beta by ion exchange as discussed
in our previous work [30]. H-Mor and H-Beta nanozeolites
were physically mixed under the effect of ultrasonic wave’s
energy (the ultrasonic processor model is UP 2005, Hielscher
Co., amplitude = 60%, cycle = 1 and 50 Hz) with two different
ratios (80/20 and 20/80 weight% from H-Mor/H-Beta) in a
solution mixture of deionized water and ethanol (supplied by
BDH Co.) [3,4,27]. Ultrasonication time was selected as
20 min, to be in harmony with our previous work [30]. The
solid suspended mixtures were centrifuged, dried at 110 Cfor 3 h, and then calcined at 500 C for 3 h. The samples
80/20 and 20/80 weight% from H-Mor/H-Beta are denoted
in the present work as M80 and B80, respectively.