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Journal of Materials Science: Materials in Electronics

The potentials of TiO2 nanocatalyst on HMX thermolysis

  • 30-07-2020
Published in:
Authors
Sherif Elbasuney
Gharieb S. El-Sayyad
Published in
Journal of Materials Science: Materials in Electronics | Issue 17/2020

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Abstract

Even though HMX is one of the most powerful highly explosive materials; HMX-based propellants demonstrated complexity of burning rate control as well as high pressure exponent (n). In addition, HMX is insensitive to common catalyst. TiO2 can offer novel catalyzing ability for HMX. Highly-crystalline, mono-dispersed TiO2 NPs of 5.0 nm particle size with proper surface area (26.87 ± 0. 36 m2/g) were fabricated using hydrothermal processing. TiO2 NPs were re-dispersed in organic solvent and effectively-integrated into HMX via co-precipitation technique; the impact of TiO2 NPs on HMX thermal behavior was investigated using DSC and TGA. TiO2 NPs exposed superior catalytic performance; the endothermic phase change of HMX at 187 °C was decreased by 43.3%. The main exothermic decomposition peak was decreased by 10 °C with enhanced total heat release by 46.7%. The catalytic performance of TiO2 NPs could be ascribed to the release of active surface ȮH radicals that could induce HMX decomposition via hydrogen abstraction. Furthermore, TiO2 NPs could adsorb evolved NO2 on its surface with surge in total heat release in condensed phase.

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previous article Enhanced energy storage properties of La-doped Pb0.99Nb0.02(Zr0.85Sn0.13Ti0.02)0.98O3 antiferroelectric ceramics
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Title
The potentials of TiO2 nanocatalyst on HMX thermolysis
Authors
Sherif Elbasuney
Gharieb S. El-Sayyad
Publication date
30-07-2020
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 17/2020
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-020-04054-7
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