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- W4366236670 abstract "The oxide–zeolite (OXZEO) catalyst design concept has been demonstrated in an increasing number of studies as an alternative avenue for direct syngas conversion to light olefins. We report that face-centered cubic (FCC) MnGaOx-Spinel gives 40 % CO conversion, 81 % light olefins selectivity, and a 0.17 g gcat−1 h−1 space-time yield of light olefins in combination with SAPO-18. In comparison, solid solution MnGaOx (characterized by Mn-doped hexagonal close-packed (HCP) Ga2O3) with a similar chemical composition gives a much inferior activity, i.e., the specific surface activity is one order of magnitude lower than the spinel oxide. Photoluminescence (PL), in situ Fourier-transform infrared (FT-IR), and density functional theory (DFT) calculations indicate that the superior activity of MnGaOx-Spinel can be attributed to its higher reducibility (higher concentration of oxygen vacancies) and the presence of coordinatively unsaturated Ga3+ sites, which facilitates the dissociation of the C−O bond via a more efficient ketene–acetate pathway to light olefins." @default.
- W4366236670 created "2023-04-20" @default.
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- W4366236670 date "2023-05-09" @default.
- W4366236670 modified "2023-10-15" @default.
- W4366236670 title "Tuning the Crystal Phase to Form MnGaO<sub><i>x</i></sub>‐Spinel for Highly Efficient Syngas to Light Olefins" @default.
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- W4366236670 doi "https://doi.org/10.1002/anie.202217701" @default.
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