Assessment of micropore accessibility for hydrocarbon oxidation in manganese oxide sieves
نویسندگان
چکیده
Octahedral molecular sieve (OMS) materials classified by their different tunnel sizes are defined edge-sharing MnO 6 octahedra. Four OMS (OMS-1, OMS-2, OMS-5, and OMS-6) benchmarked for ethane (C 2 H ) cyclohexane 12 oxidative dehydrogenation (ODH) compared with commercial , M1 phase MoVTeNb oxide, vanadium oxide (V O 5 ). The accessibility of the quadrilateral tunnels to C were further evaluated using density functional theory (DFT). ODH rates four higher than those measured MoVTeNbO, V . /C rate ratios on oxides larger Rate relations selective in small pores, both molecules large presence defects discussed. Product selectivities show slightly ethylene selectivity smaller pores suggesting possible connections between pore confinement selectivity. Porous octahedral sieves displaying structures prepared study Oxidative reaction as substrates. assessment micropore mesopore volumes ratios. A relationship was observed, not being discriminatory either substrate that highly active cyclohexane. Graphic created Biorender.com • Molecular Sieves (OMS). Determination microporous mesoporous connection from ODH. standards.
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ژورنال
عنوان ژورنال: Applied Catalysis A-general
سال: 2022
ISSN: ['0926-860X', '1873-3875']
DOI: https://doi.org/10.1016/j.apcata.2022.118557