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CO oxidation by CeO2-Al2O3-CeAlO3 hybrid oxides

机译:CEO2-AL2O3-CEALO3混合氧化物的CO氧化

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摘要

A modified solution combustion technique was successfully used to synthesize sub-10 nm crystallites of hybrid CeO2-Al2O3-CeAlO3. The fuel in the solution combustion was tuned to obtain mixed oxides and solid solutions of the compound. The compounds were characterized by X-ray diffraction, transmission electron microscopy and X-ray photoelectron spectroscopy. XRD and TEM analysis showed the substitution of Al~(3+) ions in the CeO2 matrix when a combination of glycine, urea, hexamine and oxalyl dihydrazide was used as fuel for the synthesis. The compounds showed high activity for CO oxidation and the activity of the compounds was dependent upon the composition of the oxide.
机译:修改的溶液燃烧技术成功地用于合成混合CEO2-AL2O3-CEALO3的亚10 nm晶体。 调整溶液燃烧中的燃料以获得化合物的混合氧化物和实心溶液。 这些化合物的特征是X射线衍射,透射电子显微镜和X射线光电子光谱。 XRD和TEM分析表明,当甘氨酸,尿素,己胺和二甲基二氢嗪的组合用作合成的燃料时,CEO2基质中Al〜(3+)离子的取代。 化合物显示出高的CO氧化活性,并且化合物的活性取决于氧化物的组成。

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