It is still a challenge to develop metal-based monolithic deNO_x catalysts with high activity, mass transfer ability and stability. Herein, we proposed a convenient and versatile pathway for the synthesis of novel monolithic deNO_x catalysts originating from the in situ immobilization of metal organic framework (MOF) precursors on Fe mesh. Interestingly, the morphology and composition of the catalysts could be modulated by adjusting the synthesis parameters, such as the synthesis time, ligands and precursors, while the characterization results revealed an improvement in oxygen vacancies and Brønsted acid sites led by the strong interaction between the uniformly distributed active Mn–Fe components. As a result, the novel monolithic catalysts demonstrated improved catalytic performance compared with traditional catalysts obtained by hydroxide precursors. This work sheds lights on the advantages of using MOF-derived materials in situ decorated on metal mesh as monolithic catalysts and paves a way to design new monolithic deNO_x catalysts with excellent low-temperature catalytic activity for future efforts.

中文翻译：

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原位修饰的MOF衍生的Mn-Fe氧化物在Fe网上作为新型整体催化剂还原NOx

它仍然是开发基于金属单片DENO挑战_X活性高，传质性和稳定性的催化剂。在此，我们提出了一种方便且通用途径新颖单片DENO的合成_X催化剂源自原位将金属有机骨架（MOF）前体固定在铁网上。有趣的是，可以通过调节合成参数，例如合成时间，配体和前体来调节催化剂的形态和组成，而表征结果表明，由于均相之间的强相互作用，氧空位和布朗斯台德酸位得到了改善。分布的活性锰铁成分。结果，与通过氢氧化物前体获得的传统催化剂相比，新型整体催化剂表现出改进的催化性能。这项工作揭示了使用MOF衍生材料的优点灯原位装饰上金属网作为整体式催化剂和铺平的方式设计新的单片DENO _X 具有出色的低温催化活性的催化剂，以备将来之需。