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Cleaning up their act: Sulfur compounds in fuels can be selectively converted into SO2 by mixing the fuel with a small amount of air at around 300 °C at ambient pressure in a continuous‐flow reactor packed with catalysts such as Pt/CeO2, Cu/CeO2, and CuO/ZnO/Al2O3. The aerobic oxidative desulfurization process opens up a cost‐effective new technology for cleaning fuels.

Novel microfibrous-structured silver catalysts were developed for gas-phase selective oxidation of mono-/aromatic-/di-alcohols. Sinter-locked three-dimensional microfibrous networks consisting of 5 vol % 8-lm-Ni (or 12-lm-SS-316L) fibers and 95 vol % void volume were built up by the papermaking/sintering processes. Silver was then deposited onto the surface of the sinter-locked fibers by incipient wetness impregnation method. At relatively low temperatures (e.g., 380C), the microfibrous-structured silver catalysts provided quite higher activity/selectivity compared to the electrolytic silver. The microfibrous Ag/Ni-fiber offered much better low-temperature activity than the Ag/ SS-fiber. The interaction at Ag particles and Ni-fiber interface not only visibly increased the active/selective sites of Ag þ ions and Ag n dþ clusters but also significantly promoted their low-temperature reducibility and ability for O 2 activation. In addition, the microfibrous structure provided a unique combination of large void volume, entirely open structure, high thermal conductivity and high permeability. V

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