In this study, novel three-dimensional ribbon-like composite materials have been introduced for selectively capturing H 2 S in a low-temperature dry anaerobic environment. First, a ribbonlike basic copper carbonate precursor with Zn doping supported on the activated semicoke (ASC) was successfully synthesized in situ by a two-step hydrothermal method for the first time. The porous Zn− Cu materials obtained after calcination were applied as a sorbent to remove H 2 S under anaerobic conditions at a low temperature. Effects of the heat treatment temperature, Cu loading content, and Zn doping content on the anaerobic desulfurization performance of Zndoped CuO x /ASC sorbents were investigated. The optimal Zndoped CuO x /ASC sorbent showed a satisfactory activity and selectivity to capture H 2 S efficiently with a breakthrough capacity of 126 mg/g. Further mechanism study demonstrates that the super desulfurization performance of this sorbent is mainly attributed to abundant pore distribution, the synergistic effect between copper and zinc, the extensive surface active oxygen, and so forth.

In this work, we systematically analyzed the structure–activity relationship and synergistic mechanism of activated semi-coke (ASC)-loaded multi-valence CuxO for the low-temperature NO-SCR process by NH3.