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Download fileImmobilizing Highly Catalytically Molybdenum Oxide Nanoparticles on Graphene-Analogous BN: Stable Heterogeneous Catalysts with Enhanced Aerobic Oxidative Desulfurization Performance
journal contribution
posted on 20.12.2018, 00:00 authored by Xiaoyu Yao, Chao Wang, Hui Liu, Hongping Li, Peiwen Wu, Lei Fan, Huaming Li, Wenshuai ZhuSupported
molybdenum oxide nanoparticles (MoOxNPs)
have attracted intensive interest due to their unique
catalytic properties. Herein, MoOxNPs
anchored on graphene-analogous boron nitride (g-BN)
was prepared by a simple one-step method. The interaction between
supports and NPs can be enhanced, and the size of MoOxNPs can be controlled during the immobilization process.
Molecular oxygen (O2) in the air can be activated effectively
with the as-prepared heterogeneous catalyst. It is noteworthy that
experimental results indicate that the controlled MoOxNP size and strong metal oxide support interaction
are the two key factors which could help to exhibit high aerobic oxidative
desulfurization activity. Moreover, sulfur removal of DBT can still
reach 98.0% after recycling 11 times, which indicates that the supported
catalyst has a good stability and recycling performance. Finally,
the Mo(IV) and Mo(V) parts serve as the active sites to promote the
production of superoxide–molybdenum species and the reaction
pathway is further proposed.
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Keywords
DBTCatalytically Molybdenum Oxide NanoparticlesGraphene-Analogous BNStable Heterogeneous Catalystsmolybdenum oxide nanoparticlessulfur removalgraphene-analogous boron nitrideimmobilization processMoO x NPscatalystO 2recycling 11 timesEnhanced Aerobic Oxidative Desulfurization Performanceoxidative desulfurization activityrecycling performanceMolecular oxygenMoO x NP sizemetal oxide support interactionreaction pathway