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Ammonium perchlorate

About: Ammonium perchlorate is a research topic. Over the lifetime, 2359 publications have been published within this topic receiving 33412 citations. The topic is also known as: AP.


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Journal ArticleDOI
TL;DR: In this article, the authors used one-pot calcination to synthesize graphitic carbon nitride (snO2NPs/g-C3N4) hybrid and found that the addition of SnO2 NPs not only increases the surface of g-C 3N4 but provides extra electrons.
Abstract: SnO2 nanoparticle-loaded graphitic carbon nitride (SnO2NPs/g-C3N4) hybrids were successfully synthesized by one-pot calcination. Various characterization means and detection techniques were used to analyse their structure and properties. It was found that SnO2 NPs possess the synergistic effect on g-C3N4. The addition of SnO2 NPs not only increases the surface of g-C3N4 but provides extra electrons. Having added 10 wt% SnO2NPs/g-C3N4 hybrids, the onset decomposition temperature of ammonium perchlorate (AP) was decreased to 352.2 °C. Furthermore, considering the band gap of g-C3N4 (Eg = 2.7 eV) and SnO2 (Eg = 3.6 eV), the conduction band electrons (ecb− and valence band holes (h+)) were generated on their surface upon heat excitation. In addition, on the basis of the synergistic effect (the ecb− would transfer from g-C3N4 to SnO2) of SnO2, a possible synergistic mechanism was proposed to understand the thermal decomposition of AP.

27 citations

Journal ArticleDOI
TL;DR: In this article, the authors explored the transport mechanisms of perchlorate infiltrated from one of these active storage ponds into a deep (40 m) layered vadose zone and the underlying Israeli coastal aquifer.

27 citations

Journal ArticleDOI
TL;DR: An energetic lead(II) coordination polymer based on the ligand ANPyO has been synthesized and its crystal structure has been characterized by FT-IR spectroscopy, elemental analysis, DSC and TG-DTG technologies Thermal analysis shows that there are one endothermic process and two exothermic decomposition stages in the temperature range of 50-600°C with final residues 5709% as mentioned in this paper.

26 citations

Journal ArticleDOI
TL;DR: In this article, a comprehensive experimental study was made of the ignition of ammonium perchlorate propellants in a shock-tube apparatus and the experimental results showed that, in the range of conditions used, ignition characteristics were in agreement with those predicted by thermal ignition theory, however, for propellant samples with surface irregularities, the thermal ignition process is accelerated at low test-gas velocities by external-flux augmenting exothermic reactions among decomposition products at the surface.
Abstract: A comprehensive experimental study was made of the ignition of ammonium perchlorate propellants in a shock-tube apparatus. Test variables were: 1) heat flux, 2) test-gas temperature, 3) test-gas velocity, and 4) pressure. Convective heat fluxes at the propellant surface were varied over the range of about 20 to 160 cal/cm sec. The experimental results showed that, in the range of conditions used, ignition characteristics of ammonium perchlorate propellants are in agreement with those predicted by thermal ignition theory. However, for propellant samples with surface irregularities, the thermal ignition process is accelerated at low test-gas velocities by external-flux-augmenting exothermic reactions among decomposition products at the surface. These decomposition products are produced at local hot spots resulting from two-dimensional Convective heating of protrusions and other surface imperfections. The experimental data indicate that the key reaction in the ignition process is the low-temperature thermal decomposition of ammonium perchlorate.

26 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023106
2022209
2021100
2020113
2019100
201884