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CeO2-Co3O4 Catalysts for CO Oxidation 总被引:1,自引:0,他引:1
CeO2-Co3O4 catalysts for low-temperature CO oxidation were prepared by a co-precipitation method. In combination with the characterization methods of N2 adsorption/desorption, XRD, temperature-programmed reduction (TPR), and FT-IR, the influence of the cerium content on the catalytic performance of CeO2-Co3O4 was investigated. The results indicate that the prepared CeO2-Co3O4 catalysts exhibit a better activity than that of pure CeO2 or pure Co3O4. The catalyst with the Ce/Co atomic ratio 1 : 16 exhibits the best activity, which converts 77% of CO at room temperature and completely oxidizes CO at 45 ℃. 相似文献
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通过化学键连法将两种Ti-复合物固载在MCM-48的孔道中,采用XRD、FT-IR对其结构进行了表征,同时以烯丙醇环氧化为探针反应考察了其催化性能.结果表明,键连Ti-复合物后,MCM-48骨架Si-O四面体发生畸变,但未引起骨架破坏;烯丙醇环氧化反应进一步显示其具有一定的催化活性,且活性中心较稳定. 相似文献