Influence of Acid–Base Surface Characteristics of GAxSIBEA Zeolites on their Catalytic Properties in the Process of Oxidative Dehydrogenation of Propane to Propylene with Participation of CO2

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 CO 2 ) in the presence of the Ga x SiBEA catalysts. The presence of such sites is confirmed by XRD, 71 Ga NMR, FTIR, and NH 3 -TPD. On the most active catalyst Ga 4.0 SiBEA a propylene yield of 40% is achieved. The selectivity of propylene formation is 70-80% on the Ga 1,0 SiBEA catalyst.