Design of Bifunctional Catalysts Based on Bea Zeolites for Tandem Processes with Participation of Ethanol

The results from the creation of BEA zeolite catalysts, containing heteroelements of Ta(Nb) and modified with d-metals (Ag, Cu, Zn), for processes involving ethanol, are presented. The activity of Ag/BEA in the selective reduction of nitrogen oxides (NOx) with ethanol is due to the presence of acidic and surface redox sites; the promoting effect of hydrogen is produced by the presence of Lewis acid sites and silver nanoclusters. The highest ethanol conversion rates and selective formation of the target product with a high (>60%) yield in the production of 1,3-butadiene from ethanol are achieved in the presence of Cu/Ta/SiBEA.