Investigation of Cu-doped MnCeOx in PTFE catalytic fiber for synergistic removal of CB and NO at low temperature

IF 9.4 1区化学 Q1 CHEMISTRY, PHYSICAL

Journal of Colloid and Interface Science Pub Date : 2025-05-20 DOI:10.1016/j.jcis.2025.137955

Shengyong Lu , Xuanhao Guo , Manting Chen , Guanjie Wang , Juan Qiu , Jiaming Ding , Minghui Tang , Zhengdong Han , Yaqi Peng , Jianhua Yan

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引用次数: 0

Abstract

The synergistic removal of multiple pollutants from flue gas has attracted growing interest in recent years. In this study, Cu-doped MnCeO_x catalysts were synthesized via an impregnation method and integrated into PTFE fibers using a split-film process to enable the simultaneous removal of chlorobenzene (CB) and nitrogen oxide (NO). Among the catalysts tested, Mn₂Ce₁Cu_0.6O_x exhibited the highest performance, achieving 90 % CB degradation and 100 % NO conversion at 180 °C. The PTFE-based catalytic fibers also demonstrated excellent removal efficiency, reaching 83.7 % for dioxins at the same temperature. A possible reaction mechanism is proposed in which the NH₃-SCR process facilitates CB oxidation by generating reactive intermediates. Cu doping was found to enhance the density of acid sites and promote the ring-opening of CB, thereby suppressing chlorine accumulation and improving catalyst stability. These findings provide valuable insights for the development and optimization of catalytic bag filters for the efficient, synergistic removal of multiple pollutants from industrial emissions.

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PTFE催化纤维中cu掺杂MnCeOx低温协同脱除CB和NO的研究

近年来，从烟气中协同去除多种污染物引起了人们越来越大的兴趣。本研究通过浸渍法制备了cu掺杂的MnCeOx催化剂，并采用裂膜工艺将其集成到PTFE纤维中，实现了氯苯（CB）和氮氧化物（NO）的同时去除。在所测试的催化剂中，Mn2Ce1Cu0.6Ox表现出最高的性能，在180°C下实现了90%的CB降解和100%的NO转化率。在相同温度下，ptfe基催化纤维对二恶英的去除率达到83.7%。提出了NH3-SCR工艺通过生成反应中间体促进CB氧化的可能机理。发现Cu掺杂可以增强酸位密度，促进CB开环，从而抑制氯的积累，提高催化剂的稳定性。这些发现为开发和优化催化袋式过滤器提供了有价值的见解，以有效地协同去除工业排放中的多种污染物。

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来源期刊

Journal of Colloid and Interface Science 化学-物理化学

CiteScore

16.10

自引率

7.10%

发文量

2568

审稿时长

2 months

期刊介绍： The Journal of Colloid and Interface Science publishes original research findings on the fundamental principles of colloid and interface science, as well as innovative applications in various fields. The criteria for publication include impact, quality, novelty, and originality. Emphasis: The journal emphasizes fundamental scientific innovation within the following categories: A.Colloidal Materials and Nanomaterials B.Soft Colloidal and Self-Assembly Systems C.Adsorption, Catalysis, and Electrochemistry D.Interfacial Processes, Capillarity, and Wetting E.Biomaterials and Nanomedicine F.Energy Conversion and Storage, and Environmental Technologies