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- W4237031543 abstract "Abstract Hexagonal boron nitride ( h ‐BN) has lately received great attention in the oxidative dehydrogenation (ODH) reaction of propane to propylene for its extraordinary olefin selectivity in contrast to metal oxides. However, high crystallinity of commercial h ‐BN and elusive cognition of active sites hindered the enhancement of utilization efficiency. Herein, four kinds of plasmas (N 2 , O 2 , H 2 , Ar) were accordingly employed to regulate the local chemical environment of h ‐BN. N 2 ‐treated BN exhibited a remarkable activity, i.e., 26.0 % propane conversion with 89.4 % selectivity toward olefins at 520 °C. Spectroscopy demonstrated that “three‐boron center” N‐defects in the catalyst played a pivotal role in facilitating the conversion of propane. While the sintering effect of the “BO x ” species in O 2 ‐treated BN, led to the suppressed catalytic performance (12.4 % conversion at 520 °C)." @default.
- W4237031543 created "2022-05-12" @default.
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- W4237031543 date "2021-08-01" @default.
- W4237031543 modified "2023-09-23" @default.
- W4237031543 title "Plasma Tuning Local Environment of Hexagonal Boron Nitride for Oxidative Dehydrogenation of Propane" @default.
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- W4237031543 doi "https://doi.org/10.1002/ange.202106713" @default.
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