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- W2982360219 abstract "Biopolymer chitosan has a large amount of hydroxyl and amino groups which can interact with metals and modify physicochemical properties at interfaces and are ideal as supports in catalytic systems. Here, we show the catalytic system that leverages reactive metal–biopolymer interactions for selective hydrogenation of acetylene, which represents one of the most important reactions in the petrochemical industry. Approximately 100% conversion and ∼90% selectivity to ethylene can be achieved at 90 °C. In situ diffuse reflectance infrared Fourier transform spectrometer identifies the di-σ adsorption of acetylene over metal sites, which competes favorably with ethene adsorption, resulting in high selectivity. Quantum-chemical simulations suggest that the perpendicular mode of chitosan adsorption via the NH2 group is energetically favorable on Pd(111) compared to others by ∼0.6 eV. Compared with pristine Pd(111), *C2H4 is favorable to desorb into the gas phase rather than further hydrogenation over Pd/CTS due to the lowering of the electronic d-states of Pd upon adsorption of chitosan." @default.
- W2982360219 created "2019-11-08" @default.
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- W2982360219 date "2019-10-28" @default.
- W2982360219 modified "2023-09-30" @default.
- W2982360219 title "Reactive Metal–Biopolymer Interactions for Semihydrogenation of Acetylene" @default.
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- W2982360219 doi "https://doi.org/10.1021/acscatal.9b04042" @default.
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