Abstract：
This study effectively addresses the rapid deactivation of manganese-based catalysts in humid environments during ozone decomposition by introducing iron-doped manganese oxide octahedral molecular sieve (Fe-OMS-2) catalysts supported on activated carbon (AC). By optimizing the doping ratio of Fe-OMS-2, the Fe-OMS-20.5/AC catalyst achieves nearly 100% ozone decomposition efficiency across a wide range of relative humidity levels (0 to 60%), even at elevated air flow rates of 800 L·g-1·h-1, outperforming standalone AC, Fe-OMS-2, or a simple mixture of OMS-2 and AC. The Fe-OMS-20.5/AC catalyst features a porous surface and a mesoporous structure, providing a substantial specific surface area that facilitates the uniform distribution of the Fe-OMS-2 active phase on the AC surface. The incorporation of Fe3+ ions enhances electron transfer between valence state transitions of Mn, thereby improving the catalyst\'s efficiency in ozone decomposition. Additionally, the AC component protects catalytic sites and enhances the catalyst\'s humidity resistance. In conclusion, this research presents a novel strategy for developing highly efficient and cost-effective ozone decomposition catalysts that enhance dehumidification, significantly contributing to industrial ozone treatment technologies and advancing environmental protection.
摘要：
本研究通过引入负载在活性炭（AC）上的铁掺杂的氧化锰八面体分子筛（Fe-OMS-2）催化剂，有效地解决了锰基催化剂在臭氧分解过程中在潮湿环境中的快速失活。通过优化Fe-OMS-2的掺杂比，Fe-OMS-20.5/AC催化剂在宽范围的相对湿度水平（0至60％）上实现了近100％的臭氧分解效率，即使在800L·g-1·h-1的较高空气流速下，性能也优于独立AC，Fe-OMS-2或OMS-2和AC的简单混合物。Fe-OMS-20.5/AC催化剂具有多孔表面和介孔结构，提供促进Fe-OMS-2活性相在AC表面上均匀分布的显著比表面积。Fe3离子的掺入增强了Mn的价态跃迁之间的电子转移，从而提高催化剂在臭氧分解中的效率。此外,AC组分保护催化位点并增强催化剂的耐湿性。总之,这项研究提出了一种开发高效和具有成本效益的臭氧分解催化剂的新策略，显着促进工业臭氧处理技术和促进环境保护。
