Flowerlike FeOX–MnOX Amorphous Oxides Anchored on PTFE/PPS Membrane for Efficient Dust Filtration and Low-Temperature No Reduction,Industrial & Engineering Chemistry Research

当前位置： X-MOL 学术 › Ind. Eng. Chem. Res. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Flowerlike FeOX–MnOX Amorphous Oxides Anchored on PTFE/PPS Membrane for Efficient Dust Filtration and Low-Temperature No Reduction
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-04-19 , DOI: 10.1021/acs.iecr.2c00272
Rong Luo ₁ , Yiqing Zeng _{1,

2} , Shengui Ju ₁ , Shasha Feng ₁ , Feng Zhang ₁ , Zhaoxiang Zhong _{1,

2} , Weihong Xing ₁

Affiliation

The design and preparation of efficient catalytic membrane is the key to realizing dust filtration and denitration in one unit. Herein, flowerlike Mn_yFe_zO_x amorphous oxide catalysts were anchored on a PTFE/PPS membrane via hydrothermal methods. The uniform flowerlike structure has low gas resistance and can provide large surface area. The synergy effect between Fe and Mn species promotes the growth of Mn_yFe_zO_x catalyst on PTFE/PPS membrane, and it is conducive to the improvement of the surface acidity and redox properties. Because of the largest surface area, as well as suitable redox property and surface acidity, the NO removal efficiency of Mn₄Fe₁O_x@PTFE/PPS catalytic membrane is always >90% at temperatures of 115–180 °C under a gas hourly space velocity (GHSV) of 74 000 mL g^–1 h^–1. The durable test results reveal that Mn₄Fe₁O_x@PTFE/PPS has excellent long-term stability and SO₂/H₂O resistance. Finally, dust filtration test results show that Mn₄Fe₁O_x@PTFE/PPS has good dust filtration performance under different conditions. Overall, the data obtained in this work suggest that the Mn₄Fe₁O_x@PTFE/PPS catalytic membrane has great application prospects in the simultaneous dust and NO purification of low-temperature flue gas. We expected that this work can shed some light on the design and preparation of catalytic membranes.

中文翻译：

花状 FeOX-MnOX 无定形氧化物锚定在 PTFE/PPS 膜上，实现高效除尘和低温无还原

高效催化膜的设计与制备是实现集尘过滤脱硝的关键。在此，花状 Mn _y Fe _z O _x无定形氧化物催化剂通过水热法固定在 PTFE/PPS 膜上。均匀的花状结构，气体阻力低，可提供较大的表面积。Fe和Mn物种之间的协同作用促进了Mn _y Fe _z O _x催化剂在PTFE/PPS膜上的生长，有利于表面酸度和氧化还原性能的改善。由于最大的比表面积，以及合适的氧化还原性能和表面酸度，Mn ₄ Fe的 NO 去除效率₁ O _x^{@PTFE/PPS 催化膜在 115–180 °C 的温度和 74 000 mL g –1} h ^–1的气时空速 (GHSV) 下始终 >90% 。耐久测试结果表明，Mn ₄ Fe ₁ O _x @PTFE/PPS 具有优异的长期稳定性和耐SO ₂ /H ₂ O 性能。最后，粉尘过滤测试结果表明，Mn ₄ Fe ₁ O _x @PTFE/PPS在不同条件下具有良好的粉尘过滤性能。总的来说，在这项工作中获得的数据表明，Mn ₄ Fe ₁ O _x@PTFE/PPS催化膜在低温烟气除尘和NO同步净化方面具有很大的应用前景。我们希望这项工作可以为催化膜的设计和制备提供一些启示。

更新日期：2022-04-19

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南