高产气率和高释放F能力的氟铁酸铵纳米结构氧化剂改善铝粉的燃烧性能

IF 6.2 2区工程技术 Q2 ENERGY & FUELS

Combustion and Flame Pub Date : 2025-05-28 DOI:10.1016/j.combustflame.2025.114255

Xiandie Zhang, Haozhe Li, Xuxu Cui, Xinwen Ma, Jiaming Liu, Xiaode Guo, Xiang Zhou

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引用次数: 0

摘要

铝粉的钝化层阻碍了铝燃烧过程中的传质。含氟氧化剂，如金属氟化物和含氟聚合物，大大改善了铝粉的燃烧性能。本文采用简单的溶剂热法制备了基于氟高铁酸铵的高熵针状累积含氟氧化剂。表征结果表明，加热含氟氧化剂可以释放HF和NH3的气态产物。HF腐蚀钝化层，NH3为燃料提供动能，产生多热点和二次燃烧，防止反应烧结。与传统的FeF3相比，该新型含氟氧化剂通过降低铝粉的起燃温度，提高其放热焓、火焰面积和F释放能力，显著改善了铝粉的燃烧。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Nanostructured oxidizer of ammonium fluoroferrates with high gas yield and F release capacity to improve the combustion behavior of Al powder

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Nanostructured oxidizer of ammonium fluoroferrates with high gas yield and F release capacity to improve the combustion behavior of Al powder

The passivation layer of Al powder hinders the mass transfer during Al combustion. Fluorinated oxidants, such as metal fluorides and fluoropolymers, substantially improve the combustion behaviour of Al powder. Herein, a simple solvothermal method is employed to produce a high-entropy acicular accumulational fluorine-containing oxidiser based on ammonium fluoroferrates. The characterization results indicate that heating the fluorine-containing oxidiser can release gaseous products of HF and NH₃. HF etches the passivation layer, and NH₃ provides kinetic energy to the fuel, resulting in multiple hot spots and secondary combustion as well as prevention of reaction sintering. Compared with traditional FeF₃, this novel fluorine-containing oxidiser considerably improves the combustion of Al powder by reducing its onset temperature as well as increasing its exothermic enthalpy, flame area and F release ability.

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来源期刊

Combustion and Flame 工程技术-工程：化工

CiteScore

9.50

自引率

20.50%

发文量

631

审稿时长

3.8 months

期刊介绍： The mission of the journal is to publish high quality work from experimental, theoretical, and computational investigations on the fundamentals of combustion phenomena and closely allied matters. While submissions in all pertinent areas are welcomed, past and recent focus of the journal has been on: Development and validation of reaction kinetics, reduction of reaction mechanisms and modeling of combustion systems, including: Conventional, alternative and surrogate fuels; Pollutants; Particulate and aerosol formation and abatement; Heterogeneous processes. Experimental, theoretical, and computational studies of laminar and turbulent combustion phenomena, including: Premixed and non-premixed flames; Ignition and extinction phenomena; Flame propagation; Flame structure; Instabilities and swirl; Flame spread; Multi-phase reactants. Advances in diagnostic and computational methods in combustion, including: Measurement and simulation of scalar and vector properties; Novel techniques; State-of-the art applications. Fundamental investigations of combustion technologies and systems, including: Internal combustion engines; Gas turbines; Small- and large-scale stationary combustion and power generation; Catalytic combustion; Combustion synthesis; Combustion under extreme conditions; New concepts.