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A Highly Effective Liquid-Solid Reaction for In Situ Preparation of Copper Azide
Guorong Lei1, Wenchuan Cheng1, Tonglai Zhang1
1State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing100081, People's Republic of China.
Inorganic Chemistry
|November 23, 2022
Summary
Researchers developed a fast, in situ method to prepare copper azide (CA), an energetic material. This new liquid-solid reaction avoids direct handling of sensitive CA, improving safety and efficiency for its use as a microinitiator charge.
Area of Science:
- Materials Science
- Chemical Engineering
- Energetic Materials
Background:
- Copper azide (CA) is an energetic material with high energy output and environmental benefits.
- Extreme sensitivity of CA limits its practical applications, necessitating safer preparation methods.
- In situ preparation of CA can mitigate risks associated with direct handling.
Purpose of the Study:
- To develop a straightforward, high-efficiency method for the in situ preparation of copper azide.
- To demonstrate a facile liquid-solid reaction strategy for azidation.
- To improve the safety and efficiency of copper azide production.
Main Methods:
- A liquid-solid reaction strategy was employed for the in situ transformation of copper(II) hydroxide (Cu(OH)2) into copper azide (CA).
- The transformation occurred in an aqueous solution of hydrazoic acid.
- The method was demonstrated using in situ preparation of CA on a copper film.
Main Results:
- The in situ transformation of Cu(OH)2 into CA was completed rapidly, within 4 minutes.
- This method significantly improved the efficiency of CA production compared to existing techniques.
- A facile and highly efficient route for in situ CA preparation was established.
Conclusions:
- The proposed liquid-solid reaction strategy offers a simple and rapid method for in situ copper azide preparation.
- This approach enhances safety by avoiding direct handling of sensitive copper azide.
- The developed method presents a significant advancement in the efficient production of copper azide for microinitiator applications.
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