Design of a high-efficiency ultrafine dry powder fire extinguishing agent incorporated with Fe/ZSM-5 zeolite

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2025-05-19 DOI:10.1016/j.powtec.2025.121133

Yanting Zhou , Junchao Zhao , Tengfei Wang , Zhilei Yu , Yangyang Fu , Yong Jiang , Xudong Cheng , Heping Zhang

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引用次数: 0

Abstract

Despite the exceptional fire-suppressant capabilities of ultrafine dry powder fire extinguishing agents, additional work is essential to improve their overall fire-extinguishing performance. In this investigation, we explored the utility of Fe³⁺ loaded ZSM-5 zeolite in enhancing the firefighting capabilities of ultrafine dry powder fire extinguishing agents. The loading of transition ions Fe³⁺ onto the ZSM-5 zeolite was achieved through the ion solution exchange method. Interestingly, the loading of Fe element on Fe/ZSM-5 zeolite displayed a pattern of initial increase followed by decrease as the ion exchange time lengthened. Furthermore, the loading of Fe element on Fe/ZSM-5 zeolite was found to be influenced positively by the initial concentration of Fe³⁺ and pH levels. Impressively, under specific working conditions, the prepared Fe/ZSM-5 zeolite demonstrated a substantial Fe element loading of 5.82 %. Incorporation of ZSM-5 zeolite resulted in a 10.01 % enhancement in the fire-extinguishing efficiency of the ultrafine dry powder compared to undoped samples. Moreover, the incorporation of Fe/ZSM-5 zeolite has resulted in an enhancement of fire extinguishing efficiency by 20.45 % (S3), 24.20 % (S4), and 29.04 % (S5) in comparison to S1. These findings contribute to the understanding that the incorporation of Fe/ZSM-5 zeolite significantly enhances the fire extinguishing performance of ultrafine dry powder fire extinguishing agents, with extinguishing efficiency improving with increased Fe element loading.

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含Fe/ZSM-5分子筛的高效超细干粉灭火剂的设计

尽管超细干粉灭火剂具有特殊的灭火能力，但要提高其整体灭火性能，还需要额外的工作。在本研究中，我们探索了负载Fe3+的ZSM-5沸石在提高超细干粉灭火剂灭火能力中的应用。通过离子溶液交换法，实现了过渡离子Fe3+在ZSM-5分子筛上的负载。有趣的是，随着离子交换时间的延长，Fe/ZSM-5沸石上Fe元素的负载呈现先增加后减少的趋势。此外，Fe/ZSM-5沸石上Fe元素的负载受到Fe3+初始浓度和pH水平的正影响。令人印象深刻的是，在特定的工作条件下，制备的Fe/ZSM-5沸石的铁元素负载高达5.82%。ZSM-5沸石的掺入使超细干粉的灭火效率比未掺入的样品提高10.01%。此外，与S1相比，Fe/ZSM-5沸石的掺入使灭火效率提高了20.45% (S3), 24.20% （S4）和29.04% （S5）。这些发现有助于理解Fe/ZSM-5沸石的掺入显著提高了超细干粉灭火剂的灭火性能，并随着Fe元素含量的增加而提高灭火效率。

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.