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Preparation and Reactivity of Gasless Nanostructured Energetic Materials
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Published on: April 2, 2015

Microscopic approaches to liquid nitromethane detonation properties.

Anaïs Hervouët1, Nicolas Desbiens, Emeric Bourasseau

  • 1CEA, Centre DAM - Ile de France, Département de Physique Théorique et Appliquée, Bruyères-le-Chatel, 91297 Arpajon Cedex, France.

The Journal of Physical Chemistry. B
|April 2, 2008
PubMed
Summary

Microscopic simulations reveal key thermodynamic and chemical properties of nitromethane, including its Hugoniot curve and decomposition kinetics. These findings align well with experimental data, enhancing our understanding of this energetic material.

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Area of Science:

  • Computational Chemistry
  • Materials Science
  • Chemical Physics

Background:

  • Nitromethane is a crucial energetic material with complex thermodynamic and chemical behaviors.
  • Accurate prediction of its properties is vital for safety and performance applications.
  • Existing models may not fully capture its reactive dynamics under extreme conditions.

Purpose of the Study:

  • To investigate the thermodynamic and chemical properties of nitromethane using advanced microscopic simulation techniques.
  • To compute the Hugoniot curve and detonation product properties.
  • To determine kinetic rate constants and activation energies for nitromethane decomposition.

Main Methods:

  • Monte Carlo simulations employing a modified Erpenbeck equation of state and a novel intermolecular potential.
  • Molecular dynamics simulations utilizing a reactive potential for decomposition analysis.
  • Reactive ensemble Monte Carlo simulations for Crussard curve and Chapman-Jouguet point calculations.

Main Results:

  • Computed Hugoniot curve for nitromethane shows good agreement with experimental data.
  • Calculated kinetic rate constants and activation energies provide insights into decomposition pathways.
  • Thermodynamic properties at the Chapman-Jouguet point and the Crussard curve are determined.

Conclusions:

  • Microscopic simulations accurately predict the thermodynamic and chemical properties of nitromethane.
  • The study validates the employed simulation methods and potentials for energetic materials.
  • Results offer a reliable foundation for further research and applications involving nitromethane.