Preparation of Nano‐Sized Copper β‐Resorcylate (β‐Cu) and its Excellent Catalytic Activity for the Thermal Decomposition of Ammonium Perchlorate

Hao, Gazi; Liu, Jie; Gao, Han; Xiao, Lei; Ke, Xiang; Jiang, Wei; Zhao, Fengqi; Gao, Hongxu

doi:10.1002/prep.201500006

Cited by 21 publications

(22 citation statements)

References 14 publications

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“…Unfavorably, a two-step method was used to synthesize the AP/nanocatalysts composites [16]. In this method, the nanocatalysts were prepared firstly and then AP/nanocatalysts composites were obtained by mixing the nanocatalysts and AP in a non-solvent of AP.…”

Section: Introductionmentioning

confidence: 99%

“…Up-to-date, many promising results have been achieved. Nano-sized transition metal oxides (NTMOs) or metal salts such as Fe 2 O 3 , CuO, Cu 2 O, CuCr 2 O 4 , CuC 2 O 4 , Cr 2 O 3 , Co 2 O 3 , Co 3 O 4 , CoC 2 O 4 , etc, are known to catalyze the thermal decomposition of AP and therefore improve the performance of CSPs [7][8][9][10][11]. Among these nanocatalysts, copper salts including CuO and CuCr 2 O 4 are one of the most effective candidates for CSPs [12].…”

Section: Introductionmentioning

confidence: 99%

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Facile Preparation of AP/Cu(OH)₂ Core‐Shell Nanocomposites and Its Thermal Decomposition Behavior

Hao

Liu

et al. 2017

Propellants Explo Pyrotec

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Ammonium perchlorate (AP)/Cu(OH)2 core‐shell nanocomposites were successfully synthesized using a facile ultrasonic assisted‐coprecipitation synthesis route. The obtained AP/Cu(OH)2 nanocomposites were characterized by means of powder X‐ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Its thermal decomposition was studied under the non‐isothermal conditions with thermogravimetric analysis and differential scanning calorimeter (TG‐DSC) techniques. In this procedure, SEM and TEM observations revealed that Cu(OH)2 nanoparticles with an average size of 10–15 nm were uniformly deposited on the surface of AP particles. Detailed characterization results indicated that the existence of evidence of Cu(OH)2. As expected, it was found that the AP/Cu(OH)2 nanocomposites with mass fraction of 2 wt % Cu(OH)2 remarkably decreased the peak temperature of high temperature decomposition of AP by 80.2 °C from approximately 441.3 °C to 361.1 °C. As compared with pure AP, the AP/Cu(OH)2 nanocomposites show lower impact and friction sensitivity. These results may lead to potential applications of the AP/Cu(OH)2 nanocomposites in the composite solid propellants for accelerating the thermal decomposition of AP.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Facile Preparation of AP/Cu(OH)₂ Core‐Shell Nanocomposites and Its Thermal Decomposition Behavior

Hao

Liu

et al. 2017

Propellants Explo Pyrotec

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“…Jun Liu [22,23] selected copper amine complex and silver amine complex as precursors and synthesized uniform size particles, exterior rule, nonagglomerated copper hydroxide and silver nano-particles. Other literature studies [20,[24][25][26][27] also show that the nano-particles prepared by the freeze-drying method have a uniform and fine particle size, regular shape, less hard agglomeration and they are easier to disperse. This will probably improve the dispersion performance of nano-copper in lubricating oil.…”

Section: Introductionmentioning

confidence: 83%

Tribological performance of freeze-drying nano-copper particle as additive of paroline oil

Peng

Guo

Han

et al. 2020

Mater. Res. Express

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Monodispersed nano-copper particles were prepared, and the optimized method of preparation procedure was established through orthogonal experiments under four different factors. The experimental results show that the particle size of freeze-dried nano-copper particles can be adjusted by rotational speed, freezing rate, types of active agents and freezing mode, and freezing mode is the most important among all of the four factors. Tribological results of the nano-copper particles from the best optimized procedure can be improved 5%-10% than that of pure paroline oil and the lowest coefficient of friction 0.12 can be obtained for the sample of 0.05 wt%. The lubrication mechanism mostly attributed to the appropriate concentration of copper particles filling the surface pits, which is beneficial for the improvement of the tribological performance.

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“…The existence of diffraction peaks of CuO and Cr 2 O 3 confirms that the raw CuCr 2 O 4 contains some impurities. However, in the process of mechanical grinding, continuous high-speed collisions promote the formation of CuCr 2 O 4 from free CuO and Cr 2 O 3 , which improves the purity of nano-CuCr 2 O 4 [23,29,30]. The above conclusions indicate that the application of nano-CuCr 2 O 4 rather than the raw CuCr 2 O 4 is expected to significantly improve the performance of the solid propellant.…”

Section: Micromorphology and Structure Of Different Components In Pro...mentioning

confidence: 99%

Effect of Nano‐Copper Chromite on the Thermal Decomposition and Combustion of AP‐Based Solid Propellants

Gou¹,

Kou

et al. 2022

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This investigation was devoted to exploring the application performance of nano‐combustion catalyst CuCr2O4 in solid propellants. In this paper, raw CuCr2O4 and nano‐CuCr2O4 prepared by the mechanical grinding method were applied in solid propellants containing ammonium perchlorate (AP), which are ammonium perchlorate/ hydroxy‐terminated polybutadiene propellant (AP/HTPB) and ammonium perchlorate/composite modified double‐base propellant (AP/CMDB). And the scanning electron microscope, displacement volume method, thermogravimetric analysis, differential scanning calorimetry, and strand burner method were employed to characterize the performance of AP‐based solid propellants. The results show that the AP/HTPB propellant has fewer defects on the surface of it due to the presence of nano‐CuCr2O4, but it has no significant effect on the AP/CMDB propellant. Nano‐CuCr2O4 can also significantly increase the density of AP/HTPB propellant and AP/CMDB propellant to 1.736 g/cm3 and 1.633 g/cm3, respectively. Nano‐CuCr2O4 obviously advances the decomposition temperature of AP/HTPB propellant and AP/CMDB propellant, which also increases the apparent heat of decomposition. In addition, the burning rate of nano‐CuCr2O4‐AP/HTPB propellant and nano‐CuCr2O4‐AP/CMDB propellant increased to 1.60 mm/s and 3.23 mm/s, with an increase of 28.3 % and 26.3 %, respectively. Therefore, nano‐CuCr2O4 is expected to be widely used in solid propellants due to its excellent properties.

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Preparation of Nano‐Sized Copper β‐Resorcylate (β‐Cu) and its Excellent Catalytic Activity for the Thermal Decomposition of Ammonium Perchlorate

Cited by 21 publications

References 14 publications

Facile Preparation of AP/Cu(OH)₂ Core‐Shell Nanocomposites and Its Thermal Decomposition Behavior

Facile Preparation of AP/Cu(OH)₂ Core‐Shell Nanocomposites and Its Thermal Decomposition Behavior

Tribological performance of freeze-drying nano-copper particle as additive of paroline oil

Effect of Nano‐Copper Chromite on the Thermal Decomposition and Combustion of AP‐Based Solid Propellants

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Preparation of Nano‐Sized Copper β‐Resorcylate (β‐Cu) and its Excellent Catalytic Activity for the Thermal Decomposition of Ammonium Perchlorate

Cited by 21 publications

References 14 publications

Facile Preparation of AP/Cu(OH)2 Core‐Shell Nanocomposites and Its Thermal Decomposition Behavior

Facile Preparation of AP/Cu(OH)2 Core‐Shell Nanocomposites and Its Thermal Decomposition Behavior

Tribological performance of freeze-drying nano-copper particle as additive of paroline oil

Effect of Nano‐Copper Chromite on the Thermal Decomposition and Combustion of AP‐Based Solid Propellants

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Facile Preparation of AP/Cu(OH)₂ Core‐Shell Nanocomposites and Its Thermal Decomposition Behavior

Facile Preparation of AP/Cu(OH)₂ Core‐Shell Nanocomposites and Its Thermal Decomposition Behavior