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Assembling Silver Cluster-Based Organic Frameworks for Higher-Performance Hypergolic Properties.

Chao Wang1, Ya-Jie Wang1, Chun-Lin He2

  • 1Henan Key Laboratory of Crystalline Molecular Functional Materials, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.

JACS Au
|January 3, 2022
PubMed
Summary
This summary is machine-generated.

Researchers developed advanced energetic materials by combining silver clusters and metal-organic frameworks (MOFs). This new propellant, ZZU-363, shows a significantly reduced ignition delay and higher energy output compared to traditional propellants.

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Area of Science:

  • Materials Science
  • Chemistry
  • Aerospace Engineering

Background:

  • Next-generation propellants are crucial for advanced aerospace applications.
  • Developing energetic materials with improved performance and safety is an ongoing research focus.

Purpose of the Study:

  • To synthesize and characterize novel energetic materials based on metal-organic frameworks (MOFs) incorporating silver clusters.
  • To evaluate the performance of these MOFs as propellants, focusing on ignition delay, energy density, and specific impulse.

Main Methods:

  • Assembly of zero-dimensional (0D) silver clusters with energetic ligands into 3D metal-organic frameworks (MOFs).
  • Synthesis and characterization of the ZZU-363 framework with nitrate counter ions.
  • Experimental measurement of ignition delay time, volumetric energy density, and specific impulse.
  • Theoretical calculations to elucidate the underlying mechanisms of hypergolic activity.

Main Results:

  • The ZZU-363 MOF exhibited a significantly reduced ignition delay time of 26 ms.
  • Achieved the highest volumetric energy density (40.4 kJ cm⁻³) and specific impulse (263.1 s) among the synthesized materials.
  • Demonstrated superior performance compared to traditional hydrazine-based propellants.
  • Theoretical calculations confirmed the reduced energy barrier contributing to enhanced hypergolic activity.

Conclusions:

  • Combining silver clusters and MOFs is a promising strategy for developing high-performance energetic materials.
  • The ZZU-363 MOF represents a significant advancement in propellant technology, offering enhanced hypergolic activity and energy output.
  • This research opens new avenues for designing advanced propellants with tunable properties.