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- W4220922029 abstract "The on-purpose production of butadiene and light olefins via oxidative conversion of n-butane was investigated over nanocomposites of Ni-Bi-Si oxides comprising Bi12SiO20/Bi2SiO5 phase regulated with silica of Beta, USY and ZSM-5 zeolites. Different ratios of Bi12SiO20 and Bi2SiO5 phases were obtained depending on the zeolite species and its SiO2/Al2O3 ratio. The Ni-Bi-Si oxides were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, UV-vis diffuse reflectance spectroscopy, etc. to examine the electronic state and oxygen mobility in specific Bi-Si oxides; Bi2SiO5 and Bi12SiO20. The active species-zeolites interaction controlled the reducibility of Ni-Bi-O system and acidity of the catalysts. Ni-Bi-O/ZSM-5(1500) catalyst exhibited high selectivity for the oxidative conversion of n-butane to ethylene and propylene (60.7 wt. %) at 16 % conversion. Similarly, the olefinic selectivity over NiO-Bi12SiO20-Bi2SiO5/ZSM-5(280) catalyst at 20 % conversion, was 87 % (ethylene and propylene = 28.3 %, C4 olefins = 58.6 % including BD = 20 %) at 500°C and feed ratio of O2/n-butane = 2.0." @default.
- W4220922029 created "2022-04-03" @default.
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- W4220922029 date "2022-04-01" @default.
- W4220922029 modified "2023-09-24" @default.
- W4220922029 title "Production of butadiene and lower olefins via oxidative conversion of n-butane over Ni-Bi-O/zeolite catalysts" @default.
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- W4220922029 doi "https://doi.org/10.1016/j.mcat.2022.112224" @default.
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