Reaction Kinetics Mechanisms and Catalysis, Год журнала: 2023, Номер 136(1), С. 13 - 22
Опубликована: Янв. 23, 2023
Язык: Английский
Process Safety and Environmental Protection, Год журнала: 2024, Номер 185, С. 853 - 863
Опубликована: Март 19, 2024
Язык: Английский
Процитировано
24
FirePhysChem, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
3
Defence Technology, Год журнала: 2023, Номер 32, С. 120 - 133
Опубликована: Апрель 8, 2023
Improving the application of nanomaterials has always been a research hotspot in field energetic materials (EMs) due to their obvious catalytic effect on EMs, especially uniformly dispersed nanomaterials. However, few studies have reported dispersion In this study, dispersity and mixing uniformity nano-CuCr2O4 was evaluated based difference solid UV light absorption between nano-catalytic EMs. The nano-CuCr2O4/ultrafine AP composites with different were prepared by manual grinding mechanical strength griding time. And then, absorbance samples at 212 nm obtained testing high repeatability 210–214 for three parallel experiments, calculated through established equation. Furthermore, characterized XRD, IR, SEM, EDS, DSC TG-MS, which confirmed that methods did not change structure (XRD IR), improved increase time (SEM EDS). scientificity feasibility equation further verified DSC. exhibits positive intrinsic relationship its performance, significantly reduces thermal decomposition temperature ultrafine from 367.7 338.8 °C. TG-MS patterns show advanced process about 700 s, stage, more concentrated energy release characteristic is beneficial enhance performance AP-based propellants. above conclusions evaluation method curves could provide new ideas characterization expected be widely used
Язык: Английский
Процитировано
42
FirePhysChem, Год журнала: 2023, Номер 3(3), С. 208 - 216
Опубликована: Фев. 11, 2023
Nanothermites have recently attracted a great deal of interest in both military and civilian domains owing to their capability igniting or exploding releasing significant quantity heat via redox reaction. In this study, three ternary nanothermites, which contain MgAl alloy as fuel different metal oxides (MXOY = CuO, NiO, TiO2) oxidizers, were prepared through the arrested reactive milling technique. These metastable intermolecular composites introduced nitrocellulose (NC), using fast solution drying technique, assess catalytic behavior. The as-obtained energetic composites, namely, NC/MgAl-MXOY, scrutinized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), powder X-ray diffraction (XRD), differential calorimetry (DSC). ignition delay time NC/MgAl-MXOY composite films was also determined, results revealed positive effect introduction nanothermite decrease its value compared pure NC. Using isoconversional kinetic analysis, Arrhenius parameters associated with thermal decomposition evaluated. findings indicated that choice oxidizer within composition significantly influences behavior composites. Based on obtained results, MgAl-CuO provides better performance than MgAl-NiO MgAl-TiO2 nanoparticles.
Язык: Английский
Процитировано
26
Propellants Explosives Pyrotechnics, Год журнала: 2025, Номер unknown
Опубликована: Фев. 22, 2025
ABSTRACT As a strong oxidizer, ammonium perchlorate (AP) is one of the most paramount raw materials in composite solid propellants (CSP) formulations, and thermal decomposition features AP would directly impact energy release impulsion performance CSP. CuNCN as an example metal carbodiimides explored burn rate modifier for decomposition, given their oxide counterpart belonging to typical modifiers. Our results reveal that as‐prepared can effectively accelerate AP. The additive mixture reduce activation bring down HTD by 84°C. present study highlights on effective application thermally enhanced
Язык: Английский
Процитировано
2
Energy Advances, Год журнала: 2023, Номер 2(5), С. 679 - 690
Опубликована: Янв. 1, 2023
Cobaltites NiCuZnCo 2 O 4 and CuZnCo their mixture with GO can efficiently reduce the thermal decomposition temperature activation energy of high energetic material ammonium perchlorate nitrotriazolone.
Язык: Английский
Процитировано
18
FirePhysChem, Год журнала: 2024, Номер unknown
Опубликована: Июль 1, 2024
In the present work, a study was carried out on effect of accelerated aging process thermal decomposition two composite solid propellants based ammonium perchlorate (AP) and hydroxy-terminated polybutadiene (HTPB). The first one (CP1) enriched with aluminum (Al) powders, while second (CP2) contained mixture lithium alanate (LiAlH4) as high-energy fuel additive. properties investigated propellant samples were determined using differential scanning calorimetry (DSC) thermogravimetry (TG) techniques. obtained results clearly demonstrated degradation aged compared to unaged ones, by shifting temperature peaks their main step lower temperatures decrease in DSC heat release. addition, residual unburnt increased, particularly for complex metal hydride-based propellant. Kinetic modeling phase, applying advanced isoconversional methods, revealed significant activation energy samples. Furthermore, three-dimensional diffusion model involved during phase changed random nucleation after 60 days time.
Язык: Английский
Процитировано
7
Journal of Thermal Analysis and Calorimetry, Год журнала: 2023, Номер 148(19), С. 10065 - 10079
Опубликована: Авг. 11, 2023
Язык: Английский
Процитировано
13
Materials, Год журнала: 2023, Номер 16(3), С. 1175 - 1175
Опубликована: Янв. 30, 2023
Among the most relevant themes of modernity, using renewable resources to produce biofuels attracts several countries' attention, constituting a vital part global geopolitical chessboard since humanity's energy needs will grow faster and faster. Fortunately, advances in personal computing associated with free open-source software production facilitate this work prospecting understanding complex scenarios. Thus, for development work, keywords "biofuel" "nanocatalyst" were delivered Scopus database, which returned 1071 scientific articles. The titles abstracts these papers saved Research Information Systems (RIS) format submitted automatic analysis via Visualization Similarities Method implemented VOSviewer 1.6.18 software. Then, data extracted from processed by written Python, allowed use network generated Method. it was possible establish relationships pair between nodes all clusters classified Link Strength Between Items or Terms (LSBI) year. Indeed, other associations should arouse particular interest readers. However, here, option numerical criterion. are freely available, stakeholders can infer specific connections directly. Therefore, innovative approach inferring that recent pairs terms associate need microorganisms' oils besides cerium oxide nanoparticles improve performance fuel mixtures reducing emission hydrocarbons (HC) oxides nitrogen (NOx).
Язык: Английский
Процитировано
12
Frontiers in Chemistry, Год журнала: 2022, Номер 10
Опубликована: Окт. 13, 2022
Energetic Metal Organic Frameworks (EMOFs) have been a hotspot of research on solid propellants in recent years. In this paper, the application EMOFs-based burning rate catalysts was reviewed and development trend these explored. The analyzed included monometallic organic frameworks-based energetic catalysts, bimetallic multifunctional carbon-supported EMOFs that can be used conjunction with EMOFs. review suggest relatively simple catalytic effects, adding metal salts improve their effect. Bimetallic excellent performance potential for broad application. investigation is still at preliminary stage, but preparation become focus catalyst field. compounded should promoted. Finally, environmental protection, high energy low sensitivity, nanometerization, compounding solvent-free are proposed as key directions future research. This study aims to provide reference propellants.
Язык: Английский
Процитировано
19