Influence of Acid–Base Surface Characteristics of GA x SIBEA Zeolites on their Catalytic Properties in the Process of Oxidative Dehydrogenation of Propane to Propylene with Participation of CO 2

It was found that Lewis acid sites formed by isolated Ga(III) atoms play a decisive role in the process of oxidative dehydrogenation of propane to propylene (with the participation of CO2) in the presence of the GaxSiBEA catalysts. The presence of such sites is confirmed by XRD, 71Ga NMR, FTIR, and NH3-TPD. On the most active catalyst Ga4.0 SiBEA a propylene yield of 40% is achieved. The selectivity of propylene formation is 70-80% on the Ga1,0SiBEA catalyst.