Experimental study of combustion of composite fuel comprising n-decane and aluminum nanoparticles

Смирнов, В. В.; Kostritsa, S. A.; Kobtsev, V. D.; Титова, Н. С.; Starik, A. M.

doi:10.1016/j.combustflame.2015.06.011

Cited by 49 publications

(22 citation statements)

References 34 publications

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“…This necessitates development of the next generation of high energy-density fuel and high energy-density fuel additives ultimately to enhance the performance and range of air-breathing propulsion systems. A key approach to increase the energy density of the liquid fuel is to include solid particle additives such as high energy-density nanoparticles (NPs). , Aluminum (Al) holds an energy density of 84 kJ cm –3 ; aluminum NPs have consequently generated intense interest as a high energy fuel additive, since the addition of aluminum NPs has the unique potential of improving the performance of hydrocarbon fuels including JP-10. − The addition of Al NPs has been shown to improve the performance of JP-10. E et al demonstrated that adding Al NPs increased the volumetric energy of JP-10 by 10%, shortened the ignition delay times, and increased burn times in the combustion process. , Luo et al exploited a small-scale reactor to study the combustion of JP-10 containing 30–50 nm diameter Al NPs and found that the aluminum-doped samples resulted in nearly 10% higher combustion efficiency than pure JP-10 samples.…”

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confidence: 99%

“…A third potential mechanism would involve the initial oxidation of aluminum NPs. Starik et al and Smirnov et al proposed a chain mechanism for the combustion of aluminum doped n -decane fuels which can be applied to Al/JP-10. The oxidation is initiated by the formation of aluminum atoms in the gas phase, which react with molecular oxygen to produce highly reactive atomic oxygen and aluminum oxide (AlO)as observed in the present studyin an exoergic reaction (Δ H = −15 kJ mol –1 ) .…”

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Oxidation of Levitated exo-Tetrahydrodicyclopentadiene Droplets Doped with Aluminum Nanoparticles

Lucas

Brotton

Min

et al. 2019

J. Phys. Chem. Lett.

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Advancement of the next generation of air-breathing propulsion systems will require developing novel high-energy fuels by adding high energy-density materials such as aluminum to enhance fuel performance. We present original measurements, obtained by exploiting the ultrasonic levitation technique, to elucidate the oxidation of exo-tetrahydrodicyclopentadiene (JP-10; C10H16) droplets doped with 80 nm-diameter aluminum nanoparticles (Al NPs) in an oxygen–argon atmosphere. The oxidation was monitored by Raman, Fourier-transform infrared (FTIR), and ultraviolet–visible (UV–Vis) spectroscopies together with high-speed optical and IR thermal-imaging cameras. The addition of 0.5 wt % of the Al NPs was critical for ignition under our experimental conditions occurring at 540 ± 40 K. Diatomic radicals such as OH, CH, C2, and AlO were observed during the oxidation of the doped JP-10 droplets, thus providing insight into the reactive intermediates. The influence of the Al NPs on the reaction mechanism is discussed.

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confidence: 99%

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confidence: 99%

Oxidation of Levitated exo-Tetrahydrodicyclopentadiene Droplets Doped with Aluminum Nanoparticles

Lucas

Brotton

Min

et al. 2019

J. Phys. Chem. Lett.

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“…CARS-spectra of H2 molecules, which appear in the fuel-rich zones of the flame, were recorded using the CARS system employing broadband Stokes radiation and non-collinear configuration of crossing the beams. The detailed description of the system is given in [6]. The probe volume was  0.05 mm in diameter and  2 mm in length.…”

Section: Methodsmentioning

confidence: 99%

Methane-air flame thermometry using planar lase-induced fluorescence (PLIF)

et al. 2018

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“…23 Most of the previous studies have addressed the ignition and combustion of liquid hydrocarbons with the addition of AlNPs containing primarily the oxide shells. More recently, Smirnov et al 24 conducted an excellent experiment for the combustion of composite fuels composed of n-decane with 2.5% nonoxidized AlNPs (per mass). The results revealed that, in the near-axis flame regions, the temperature of the composite fuels at a long distance (z = 14 mm) from the burner is 450 K higher than that of neat fuels.…”

Section: Introductionmentioning

confidence: 99%

Ignition and Combustion of Hydrocarbon Fuels Enhanced by Aluminum Nanoparticle Additives: Insights from Reactive Molecular Dynamics Simulations

Wang

et al. 2021

J. Phys. Chem. C

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Owing to the unique properties of aluminum nanoparticles, these nanoadditives show promise in improving the combustion performance of traditional hydrocarbon fuels. Here, the ignition and combustion processes of the simplest hydrocarbon, methane, with the addition of aluminum nanoparticles, were investigated using ReaxFF molecular dynamics simulations. The oxidation of the initially unoxidized aluminum nanoparticles is a microexplosive violent combustion process. The simulation results revealed that the presence of such aluminum nanoparticles reduces the ignition delay of methane and improves its combustion efficiency. The activation energy of methane dissociation is significantly reduced by ∼47% in the presence of aluminum nanoparticles compared to the pure methane system. It is found that the mechanism of this combustion enhancement is from the significant increase in the number of atomic oxygen with the addition of aluminum nanoparticles, which accounts for the decomposition of methane by more than 60%. Moreover, the formation of atomic oxygen is mainly caused by the instability of low-coordination atoms on the surface of the Al x O y cluster. Further simulations of aluminum particles with oxide shells show that such particles can also promote the production of atomic oxygen to a small extent. It is believed that the findings presented here provide an important perspective on understanding the influence of aluminum nanoparticles on the combustion of hydrocarbon fuels at an atomic scale, and have an instructive significance in improving combustion efficiency.

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Experimental study of combustion of composite fuel comprising n-decane and aluminum nanoparticles

Cited by 49 publications

References 34 publications

Oxidation of Levitated exo-Tetrahydrodicyclopentadiene Droplets Doped with Aluminum Nanoparticles

Oxidation of Levitated exo-Tetrahydrodicyclopentadiene Droplets Doped with Aluminum Nanoparticles

Methane-air flame thermometry using planar lase-induced fluorescence (PLIF)

Ignition and Combustion of Hydrocarbon Fuels Enhanced by Aluminum Nanoparticle Additives: Insights from Reactive Molecular Dynamics Simulations

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