Controlled Preparation and Performance Study of Iron Single-Atom Catalysts Loaded on Micron-Sized Aluminum Powder

LIU Jicheng; LIU Xuan; ZHENG Chunli; LI Xinzhe; QU Wengang

doi:10.7652/xjtuxb202507019

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Controlled Preparation and Performance Study of Iron Single-Atom Catalysts Loaded on Micron-Sized Aluminum Powder

更新时间：2025-07-09

- Controlled Preparation and Performance Study of Iron Single-Atom Catalysts Loaded on Micron-Sized Aluminum Powder
- Journal of Xi’an Jiaotong University Vol. 59, Issue 7, Pages: 193-201(2025)
- 作者机构：
  
  1.西安交通大学能源与动力工程学院， 710049，西安
  2.西安近代化学研究所， 710065，西安
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202507019
  CLC： TJ55;TQ426.81
- Received：27 December 2024，
  
  Online First：17 February 2025，
  
  Published：10 July 2025
- 稿件说明：
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LIU Jicheng, LIU Xuan, ZHENG Chunli, et al. Controlled Preparation and Performance Study of Iron Single-Atom Catalysts Loaded on Micron-Sized Aluminum Powder[J]. Journal of Xi’an Jiaotong University, 2025, 59(7): 193-201.
DOI：

LIU Jicheng, LIU Xuan, ZHENG Chunli, et al. Controlled Preparation and Performance Study of Iron Single-Atom Catalysts Loaded on Micron-Sized Aluminum Powder[J]. Journal of Xi’an Jiaotong University, 2025, 59(7): 193-201. DOI： 10.7652/xjtuxb202507019.

摘要

为提高微米级铝粉的燃烧效率及其对含能分子的催化性能，基于化学气相转移（CVT）方法，制备了微米级铝粉负载铁单原子的催化剂Fe

/Al。采用电感耦合等离子体发射光谱仪（ICP-OES）、球差校正扫描透射电子显微镜（AC-STEM）、X射线吸收精细结构谱（XAFS）及X射线光电子能谱（XPS）等对单原子催化剂的负载量、结构和理化性质进行了表征。通过同步热分析（TG-DSC）对比了CVT方法改性前后材料的热反应性能，并研究了系列材料对1，1′-二羟基-5，5′-联四唑羟胺盐（TKX-50）的催化分解性能。结果表明：基于CVT法制备的催化剂表面铁物种呈现出原子级别的高度分散，使用CVT法可在铁单原子含量及催化剂产量等方面实现可控制备；系列单原子催化剂的热反应性能及其对TKX-50的热催化分解性能较未改性铝粉均表现出显著提升，其中铁负载量（质量分数）为5.0%的Fe

/Al对TKX-50具有最佳催化效果，热催化分解两阶段的反应峰值温度较未改性铝粉降低了19.3 ℃和39.1 ℃。该研究实现了铝粉为载体的单原子燃烧催化剂的可控制备，为微米级铝粉的改性提供了新的方法和思路。

Abstract

To improve the combustion efficiency of micron-sized aluminum powder and its catalytic performance for energetic molecules

iron single-atom catalysts (Fe

/Al) loaded on micron-sized aluminum powder are prepared using the chemical vapor transport (CVT) method in this study. The loading amount

structure

and physicochemical properties of the single-atom catalysts are characterized using inductively coupled plasma optical emission spectrometry (ICP-OES)

aberration-corrected scanning transmission electron microscopy (AC-STEM)

X-ray absorption fine structure spectroscopy (XAFS)

and X-ray photoelectron spectroscopy (XPS). Thermogravimetric differential scanning calorimetry (TG-DSC) is used to compare the thermal reaction performance of the materials before and after modification by CVT method

and the catalytic decomposition performance of a series of materials on dihydroxylammonium 5

5′-bistetrazole-1

1′-diolate (TKX-50) is investigated. Results indicate that the iron species on the surface of the catalysts prepared by the CVT method exhibit a high degree of atomic-level dispersion. The CVT method allows for controlled preparation in terms of iron single-atom content and catalyst yield. The thermal reaction performance of the series of single-atom catalysts

as well as their catalytic decomposition performance on TKX-50

show significant improvements compared to unmodified aluminum powder. Among them

the Fe

/Al catalyst with a loading of 5.0% iron exhibits the best catalytic effect on TKX-50

with a peak temperature of the thermal catalytic decomposition reaction reduced by 19.3 ℃ and 39.1 ℃ compared to unmodified aluminum powder. This study achieves the controlled preparation of single-atom combustion catalysts loaded on aluminum powder

providing a new method and approach for the modification of micron-sized aluminum powder.

关键词

Keywords

references

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