Ultrasound-Assisted Preparation of Mo/ZSM-5 Zeolite Catalyst for Non-Oxidative Methane Dehydroaromatization

The activity and selectivity of Mo/ZSM-5, benchmarking catalyst for the non-oxidative dehydroaromatization methane, strongly depend on cluster size, spatial distribution, chemical environment Mo-based active sites. This study discloses use an ultrasound-assisted ion-exchange (US-IE) technique as alternative Mo/ZSM-5 synthesis procedure in order to promote metal dispersion along zeolite framework. For this purpose, a plate transducer (91.8 kHz) is employed transmit ultrasonic irradiation (US) into reactor. physico-chemical properties catalytic samples prepared under said traditional impregnation (IWI) method are critically evaluated. Characterization results suggest that US neither affects crystalline structure nor particle size parent zeolite. However, US-IE promotes molybdenum species dispersion, avoids clustering at external fresh surface enhances molybdate anchoring framework with respect IWI. Despite improved between catalysts synthesized by IWI comparable. suggests sole initial enhancement does not suffice boost productivity further actions such ZSM-5 support pre-conditioning required. Nevertheless, successful implementation resulting pave way toward application other dispersed materials interest.