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- W2810745045 abstract "A successful incorporation of boron into *BEA zeolite framework has been achieved using a in situ hydrothermal synthesis in the presence of aluminum-*BEA seeds. Interestingly, the boron-*BEA crystals exhibited a cubic morphology with a remarkable decrease in the crystal size as compared with Al-*BEA seeds. The effect of boron addition on *BEA zeolite acidity was investigated by NH3-TPD and pyridine FTIR. The type of boron coordination in the framework of *BEA zeolite was observed by 11B MAS NMR. The results confirmed the formation of tetrahedral (BO4) and trigonal (BO3) boron species. The catalyst with highest boron content (Si/B = 6) showed the best catalytic transformation of methanol to olefins and the lowest deactivation rate. Moreover, it showed the highest propylene selectivity of 60% as well as the highest propylene-to-ethylene ratio (P/E) of 7.5." @default.
- W2810745045 created "2018-07-10" @default.
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- W2810745045 date "2019-01-01" @default.
- W2810745045 modified "2023-10-17" @default.
- W2810745045 title "Choreographing boron-aluminum acidity and hierarchical porosity in *BEA zeolite by in-situ hydrothermal synthesis for a highly selective methanol to propylene catalyst" @default.
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- W2810745045 doi "https://doi.org/10.1016/j.micromeso.2018.06.036" @default.
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