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考察了采用溶胶-凝胶法制备固溶体Cu0.1Ce0.9Ox和Cu0.1Ce0.6Zr0.3Ox样品的乙醇完全氧化(COE)性能.采用X射线衍射(XRD)、BET比表面积、拉曼(Raman)、氢气程序升温还原(H2-TPR)、光电子能谱(XPS)及电子顺磁共振(EPR)技术对样品结构进行了表征.结果表明:新鲜Cu0.1Ce0.9Ox样品的乙醇完全氧化活性优于Cu0.1Ce0.6Zr0.3Ox;样品经过老化处理后,结果相反;Zr的加入改善了样品的热稳定性.此外,还考察了乙醇完全氧化活性与活性物种之间的关系.
The complete ethanol oxidation (COE) of Cu0.1Ce0.9Ox and Cu0.1Ce0.6Zr0.3Ox samples prepared by sol-gel method was investigated by X-ray diffraction (XRD), BET specific surface area, Raman method, , Hydrogen temperature-programmed reduction (H2-TPR), photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR) were used to characterize the sample structure.The results showed that the ethanol oxidation activity of fresh Cu0.1Ce0.9Ox samples was superior Cu0.1Ce0.6Zr0.3Ox.The results of the samples after the aging treatment were reversed.The addition of Zr improved the thermal stability of the samples.In addition, the relationship between the complete oxidation activity of ethanol and the active species was also investigated.