Spectral Study of Effects of Aluminium Nanoparticles on Fast Reaction of Nitromethane

Fast reactions between nitromethane and aluminium nanoparticles are studied using transient spectral methods. In comparison with species produced by pure nitromethane, the emergence time for species produced by nitromethane after addition of 1g of aluminium nanoparticles decreases by 46-58% and the emission intensity increases by 13-100%. The results demonstrate that aluminium nanoparticles have positive effect on accelerating the decomposition rate of nitromethane and that the explosion efficiency of nitromethane is greatly improved. Fast reactions carried out between nitromethane and aluminium nanoparticles in different environments (CO2, H2O and O2) reveal that O2 and an appropriate amount of H2O improve the explosion efficiency of nitromethane, whereas CO2 has the weakest effect on improving this parameter. The investigations provide insights into the processoccurring in actual systems involving propellants and fuel--air explosives.