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Combustion, Explosion and Shock Waves

2015 year, number 4

Hydrogen and Air Detonation (Deflagration) Synthesis of Carbon-Encapsulated Iron Nanoparticles

H. Yan, T. Zhao, X. Li, Ch. Hun
State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian, Liaoning 116024, China
Keywords: gaseous detonation, carbon-encapsulated iron nanoparticles, detonation tube, hydrogen, air
Pages: 495–501

Abstract

With ferrocene as a precursor, carbon-encapsulated iron nanoparticles are synthesized through detonation of a gas mixture of hydrogen and air in a titanium detonation tube. XRD and TEM characterization shows that a downward trend in the size of particles can be observed with increasing amounts of the precursor. However, no further decrease occurs when the size of nanoparticles reaches approximately ≈40 nm, after which they remain in the range of 30−50nm. The initial temperature of the detonation tube at 353 K is the optimal initial temperature for the synthesis. The average grain size of the synthesized products becomes larger as the temperature of detonation increases.

DOI: http://dx.doi.org/10.1134/S0010508215040152