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A series of CuO-CeO2 catalysts doped with transition metal oxides were prepared by co-precipitation method for selective CO oxidation and the effects of the additives on the catalytic performance were examined by H2-TPR, in-situ DRIFTS techniques. The results showed that the main CO adsorption site on CuO-CeO2 series catalysts was Cu+ species. The catalytic activity at lower temperatures was related...
The catalytic hydrolysis of dimethyl ether (DME) over H-ZSM-5 was studied by experimental and theoretical studies. We observed from the pack-bed reactor that this reaction yields methanol as product at low temperature (<;300°C), but produces other carbon-containing species at higher temperature (>;300°C). However, these observations cannot give the details of the reaction mechanisms. To clarify...
The selective catalytic reduction (SCR) reaction belongs to the gas-solid multiphase reaction, and the adsorption of NH3 and NO play an important role in the reaction. The adsorption behaviors of NH3 and NO were studied with the diffuse reflectance infrared transform spectroscopy (DRIFTS) methods; these results showed that there were obvious adsorption phenomena of NH3 and NO on the catalysts. NH3...
Transition metal ion (V, Fe, or Cu) doped TiO2 nanoparticles were synthesized from titanium tetraisopropoxide (TTIP) in absolute ethanol by the modified sol-gel method. The precursor of the transition metal to be doped was added to an alcoholic solution containing TTIP. This solution was loaded into a pouch type cellophane membrane and placed in a clear solution containing 1:1 (v/v) ratio of absolute...
Cu2O nanorods with extraordinary large surface area are synthesized by polyol method successfully. Their photocatalytic property is evaluated by the photodegradation of brilliant red dye under visible light irradiation. For comparison, Cu2O nanocubes are synthesized and evaluated with photocatalytic property as well. The results show that the photocatalytic activity of the Cu2O nanorods is more than...
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