Journal
JOURNAL OF CATALYSIS
Volume 385, Issue -, Pages 176-182Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2020.03.021
Keywords
Borosilicate zeolite; Propane; Oxidative dehydrogenation; Boron species
Categories
Funding
- state key program of National Natural Science Foundation of China [21733002]
- Joint Sino-German Research Project [21761132011]
- Cheung Kong Scholars Programme of China [T2015036]
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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[3](a) and B[3](b)) was responsible for the activity of propane ODH. (C) 2020 Elsevier Inc. All rights reserved.
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