Journal of Catalysis, Vol.385, 176-182, 2020
Oxidative dehydrogenation of propane using layered borosilicate zeolite as the active and selective catalyst
Oxidative dehydrogenation (ODH) of propane to propylene offers a promising large-scale alternative to direct dehydrogenation. The reported metal oxides catalysts generally cause over-oxidation of propylene to COx, thus hindering the commercialization of ODH processes. In this study, a layered borosilicate zeolite was demonstrated as highly active and selective catalyst for the oxidative dehydrogenation of propane, showing a propylene selectivity of 83.6% and the total light olefins (propylene and ethylene) selectivity of 91.2% at a propane conversion of 3.9%. Further, at a propane conversion of 15.6%, the catalyst exhibited a propylene selectivity of 80.4% and the total light olefins selectivity of 91.6% at 530 degrees C. Structural characterization revealed that the abundance of defective trigonal boron species (13(a) and B(b)) was responsible for the activity of propane ODH. (C) 2020 Elsevier Inc. All rights reserved.