A series of CuO/MnO_x composites has been synthesized by integrating the incipient wetness impregnation method and the heat treatment of Mn-MIL-100. The catalytic activity has been tested by chlorobenzene (CB) degradation. The obtained catalysts were characterized by XRD, Raman, TG, TEM, XPS, N₂ adsorption–desorption, H₂-TPR and TPSR-MS. The results revealed that the catalytic activity of MnO_x improved remarkably after loading Cu, particularly the catalyst with 30 wt.% CuO (30Cu/MnO_x) exhibited the best catalytic activity in CB combustion, whose T_90% was 290 °C at GHSV of 15,000 h⁻¹. The excellent catalytic performance of 30Cu/MnO_x could be attributed to the abundant mesoporous structure, improved reducibility, surface-enriched Mn⁴⁺ species and active adsorbed oxygen species. Moreover, the TPSR-MS data showed that 30Cu/MnO_x exhibited higher dechlorination ability and better resistance to chlorine poisoning during CB degradation process. This study may provide a new strategy for developing mixed metal oxides derived from MOF serving as high-performance catalysts in the catalytic combustion removal of VOCs.

Graphic abstract

中文翻译：

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由Mn-MIL-100前驱体获得的CuO / MnO x复合材料，作为氯苯催化燃烧的有效催化剂

结合初期湿润浸渍法和Mn-MIL-100的热处理，合成了一系列CuO / MnO _x复合材料。已通过氯苯（CB）降解测试了催化活性。通过XRD，拉曼，TG，TEM，XPS，N ₂吸附-脱附，H ₂ -TPR和TPSR-MS对得到的催化剂进行了表征。结果表明，负载Cu后，MnO _x的催化活性显着提高，特别是含30 wt。％CuO（30Cu / MnO _x）的催化剂在CB燃烧中表现出最好的催化活性，在GHSV下T _90％为290°C。 15,000 h ^-1。30Cu / MnO _x的出色催化性能可以归因于丰富的介孔结构，改进的还原性，表面富集的Mn ⁴⁺物种和活性吸附的氧物种。TPSR-MS数据表明，在Cu降解过程中，30Cu / MnO _x表现出较高的脱氯能力和较好的抗氯中毒能力。这项研究可能为开发由MOF衍生的混合金属氧化物提供新的策略，该氧化物可作为VOC催化燃烧去除中的高性能催化剂。

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