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- W2081874489 abstract "The mechanisms of SO2 adsorption and regeneration over activated carbon-supported copper oxide sorbent/catalysts were analyzed. Studies were carried out in a fixed-bed reactor equipped with a non-dispersive infrared gas analyzer to detect the reaction products and by using X-ray powder diffraction (XRPD) and temperature-programmed desorption (TPD) experiments to characterize the nature of the sulfate species and surface oxygen complexes. The results indicate that SO2 was catalytically oxidized to SO3 over a copper phase in the presence of gaseous oxygen, and then reacted with a copper site to form a sulfate linked to copper without desorption into the gas phase. The activated carbon support did not participate in this sulfation reaction. After the adsorption of SO2, the exhausted sorbent/catalysts could be regenerated by direct heat treatment in inert gas at temperatures between 260 and 480 °C, while the neighboring surface oxygen complexes on the carbon surface were acting as the reducing agents to reduce CuSO4 to Cu. During the subsequent adsorption process, the copper is rapidly oxidized by oxygen in the flue gas." @default.
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- W2081874489 date "2004-01-01" @default.
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- W2081874489 title "Study of SO2 adsorption and thermal regeneration over activated carbon-supported copper oxide catalysts" @default.
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- W2081874489 doi "https://doi.org/10.1016/j.carbon.2004.05.004" @default.
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