刘僖论文“Elemental mercury oxidation over manganese oxide octahedral molecular sieve catalyst at low flue gas temperature”被Chemical Engineering Journal接收发表
发布时间：2018-09-04
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简介：Manganese oxide octahedral molecular sieve (OMS-2) with cryptomelane structure synthesized by a solvent-free method was employed to oxidize gaseous elemental mercury (Hg0) in coal combustion flue gas for the first time.Brunauer-Emmett-Teller (BET) surface area analysis, X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectra, H2 temperature-programmed reduction (H2-TPR) and X-ray photoelectron spectroscopy (XPS) measurement were employed to characterize the catalyst.The OMS-2 with large surface area and abundant pores presented excellent Hg0 oxidation performance at a wide temperature range of 100-250 °C.Both HCl and NO in the flue gas promoted Hg0 oxidation mainly due to the formation of active species like Cl*, NO2, which reacted with Hg0 to form volatile mercury species. The SO2 and H2O resistance of OMS-2 catalyst was much superior compared to other commercial catalysts, which makes it promising for industrial application.
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