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Hydrogen sulfide (H2S) removal is the key issue for the odor control of sewage treatment facilities. In this paper, the iron oxide sorbents with different surface acid–base properties were prepared by acid and base modification. Effect of surface properties of iron oxide sorbents on H2S removal was revealed by the characterization of surface pH, Fourier‐transform infrared spectroscopy, X‐ray photoelectron...
Effect of surface acid properties of HNO3 and NaOH modified VOx/Al2O3 catalysts on methanol selective oxidation was studied by solid-state nuclear magnetic resonance and X-ray powder diffraction (XRD) spectroscopy. The surface acidity including type and strength of the acid sites in the catalysts was characterized by the adsorption of probe molecules. Compared with the VOx/Al2O3 catalyst, stronger...
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