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    甲烷催化燃燒催化劑的研究進展

    Research Advances in Catalysts for Methane Catalytic Combustion

    • 摘要: 甲烷催化燃燒的目的是通過催化作用降低其起燃溫度(T10)和完全轉化溫度(T90), 加深其氧化程度,從而提高燃料的利用率。簡述了甲烷催化燃燒反應的機理,從種類、製備方法以及催化性能等方面詳細介紹了甲烷催化燃燒催化劑的最新進展🖖🏽。貴金屬催化劑的催化性能優越,但高成本以及熱穩定性差等因素極大地限製了其應用;非貴金屬催化劑尤其是復合金屬氧化物催化劑(例如鈣鈦礦型復合金屬氧化物催化劑和六鋁酸鹽系列催化劑等)擁有較高的催化活性,因其成本低,有更好的發展前景◻️。提高非貴金屬催化劑的低溫催化活性和高溫熱穩定性是今後甲烷催化燃燒催化劑的主要研究方向。

       

      Abstract: The purpose of catalytic combustion of methane was to reduce its ignition temperature (T10) and total conversion temperature (T90) by catalysis, deepen its oxidation degree, and thus improve the utilization rate of the fuel. In this review, The mechanisms of the catalytic combustion of methane were briefly described. Recent advances in catalysts for catalytic combustion of methane were reviewed in detail in terms of their types, preparation methods and catalytic properties. Noble metal catalysts had excellent catalytic performance, but high cost and poor thermal stability greatly limited their applications. Non-noble metal catalysts, especially composite metal oxide catalysts (such as perovskite-type composite metal oxide catalysts and hexaaluminate series catalysts), possessed high catalytic activity and low cost, and thus had better prospects for development. Improving both low-temperature catalytic activity and high-temperature thermal stability of non-noble metal catalysts may be the main research direction of methane catalytic combustion catalysts in the future.

       

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