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- W2893418372 abstract "Abstract Aqueous-phase hydrogenation of glucose to lower diols (ethylene glycol (EG), 1, 2-propylene glycol (PG), and butanediol (BDO)) over bi-functional Ru-W supported catalysts was investigated in a continuous-flow fixed-bed reactor. A variety of catalysts based on different supports including mesoporous SiO2, activated carbon (AC), carbon nanofibers (CNFs), and bulk WO3 were compared and examined by N2 physisorption, H2 chemisorption, XRD, TEM, ICP, H2-TPR, in-situ/ex-situ XPS, NH3-TPD, and Raman spectra. The results indicate that the lower diols yield is highly dependent on the synergistic effect of Ru metal sites and WOx acid sites, in other words, strongly depending on the competitive reactions of the glucose. Abundant W4+ and Ru° sites on Ru-W/SiO2 catalysts with large specific surface area effectively catalyze the selective cleavage of the C C bonds in glucose and subsequent hydrogenation to lower diols, resulting in 100% glucose conversion as well as highest diols selectivity (87.3%) over 50 h reaction at 478 K and 4 MPa H2. Meanwhile, the Ru/WO3 with much lower surface area forms more W5+ species, which is advantageous to producing more EG products (55.9%) at the same reaction conditions." @default.
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- W2893418372 date "2019-03-01" @default.
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- W2893418372 title "The synergistic effects of Ru and WOx for aqueous-phase hydrogenation of glucose to lower diols" @default.
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