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- W2974098532 abstract "The design and development of catalysts for dodecahydro-N-ethylcarbazole (12H-NECZ) dehydrogenation restrict the achievement of the cyclic hydrogenation/dehydrogenation process. In this work, the M/SiO2 (M = Pt, Pd, Ru, Rh, Au) and bimetallic PdAu/SiO2 catalysts are prepared, and their catalytic performances are measured. By XRD, XPS, HRTEM, and CO pulse chemisorption, we find that the alloy structure is not generated and the average particle size increases with the improvement of the Au amount in the bimetallic catalysts. Besides, the catalytic performance can be enhanced dramatically with introducing a small amount Au. Pd3Au1/SiO2 exhibits the best catalytic performance with the complete conversion, 94.9 selectivity to NECZ, and 5.7 wt % hydrogen release amount. The TOF values are up to 240.7 min–1, 2.26 times higher than that of Pd/SiO2. The qualitative and quantitative analyses indicate that 4H-NECZ dehydrogenation is the rate-limiting step. It can be proposed that controlling the particle size and dispersion of the PdAu/SiO2 bimetallic catalysts will bring a significant enhancement of catalytic performance." @default.
- W2974098532 created "2019-09-26" @default.
- W2974098532 creator A5051015375 @default.
- W2974098532 creator A5060828641 @default.
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- W2974098532 date "2019-09-16" @default.
- W2974098532 modified "2023-10-18" @default.
- W2974098532 title "Enhancing the Catalytic Activity and Selectivity of PdAu/SiO<sub>2</sub> Bimetallic Catalysts for Dodecahydro-<i>N</i>-ethylcarbazole Dehydrogenation by Controlling the Particle Size and Dispersion" @default.
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- W2974098532 doi "https://doi.org/10.1021/acsaem.9b01202" @default.
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