二氧化鈰（CeO₂）因其具有較強的儲放氧能力,被用作氧化還原反應的催化材料.自2005年,研究者制備出形貌可控的CeO₂納米棒、納米立方塊和納米多面體,在CeO₂形貌控制及構效關系研究方面取得長足發(fā)展.各種結構表征手段包括原位拉曼（in situ Raman）、原位傅里葉變換紅外光譜（in situ DRIFTS）、核磁共振（NMR）和電鏡等被用來研究不同形貌CeO₂的表面結構和在催化反應中的活性差異.一般的活性規(guī)律為CeO₂納米棒（{110}/{100}）>納米立方塊（{100}）>納米多面體（{111}/{100}）.近年來,負載型CeO₂催化劑因其能穩(wěn)定分散金屬,通過金屬-載體相互作用調控界面電子結構并表現(xiàn)出優(yōu)異的催化活性而引起廣泛關注,其中晶面效應在負載型CeO₂催化體系中顯得較為復雜.銅鈰催化劑被認為是非常經(jīng)濟有效的CO氧化催化劑,然而由于制備和測試條件差異導致的CeO₂晶面對銅鈰催化劑催化... 

【文章來源】：Chinese Journal of Catalysis. 2020,41(06)北大核心EISCICSCD

【文章頁數(shù)】：14 頁

【文章目錄】：
1. Introduction
2. Experimental
    2.1. Synthesis of catalysts
        2.1.1. Preparation of CeO2 NC
        2.1.2. Preparation of CeO2 NR
        2.1.3. Preparation of Cu–CeO2 catalysts
    2.2. Characterization of as-prepared catalysts
    2.3. Catalytic performance tests
3. Results and discussions
    3.1. Morphological characterization of as-prepared catalysts
    3.2. Catalytic performance of as-prepared samples
    3.3. Textural properties of as-prepared catalysts
    3.4. XPS surface analysis
    3.5. Reducibility of as-prepared catalysts
    3.6. CO-TPD analysis of CO adsorption properties of as-prepared catalysts
    3.7. In situ DRIFTS analysis of as-prepared catalysts
    3.8. Discussion
4. Conclusions
Graphical Abstract
Insights into facet-dependent reactivity of CuO–CeO2 nanocubes and nanorods as catalysts for CO oxidation reaction



本文編號：3535646