Topic
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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TL;DR: In this article, three drying methods, oven drying, vacuum drying, and vacuum freeze-drying, were comparatively used to dry Cr2O3 nanoparticles by repeated wet mechanical milling technique.
Abstract: Cr2O3 nanoparticles were prepared by repeated wet mechanical milling technique. Three drying methods, oven drying, vacuum drying, and vacuum freeze-drying were comparatively used to dry Cr2O3 nanop...
14 citations
TL;DR: The combined kinetic and spectroscopic results are consistent with a proton-transfer reaction as the first decomposition step in shocked AP.
Abstract: Time-resolved Raman scattering measurements were performed on ammonium perchlorate (AP) single crystals under stepwise shock loading. For particular temperature and pressure conditions, the intensity of the Raman spectra in shocked AP decayed exponentially with time. This decay is attributed to shock-induced chemical decomposition in AP. A series of shock experiments, reaching peak stresses from 10-18 GPa, demonstrated that higher stresses inhibit decomposition while higher temperatures promote it. No orientation dependence was found when AP crystals were shocked normal to the (210) and (001) crystallographic planes. VISAR (velocity interferometer system for any reflector) particle velocity measurements and time-resolved optical extinction measurements carried out to verify these observations are consistent with the Raman data. The combined kinetic and spectroscopic results are consistent with a proton-transfer reaction as the first decomposition step in shocked AP.
14 citations
14 citations
TL;DR: In this paper, the authors investigated the sublimation of ammonium perchlorate using simultaneous differential thermal analysis and thermogravimetric analysis and found that the activation energy was in good agreement with that derived from the Schultz-Dekker theory (18±2kcal·mole−1).
14 citations
TL;DR: In this article, two kinds of flake aluminum powder are prepared by bidirectional rotation mill using the spherical aluminum powder (Al-1) as raw materials The morphology and particle size distribution of Al powder are analyzed using scanning electron microscopy and laser particle size analyzer At the same time, the catalytic performances of the Al-1 and as-prepared Al powder on the thermal decomposition of ammonium perchlorate (AP) are studied through thermogravimetric and differential scanning calorimetry analysis
Abstract: In this paper, two kinds of flake aluminum powder are prepared by bidirectional rotation mill using the spherical aluminum powder (Al-1) as raw materials The morphology and particle size distribution of Al powder are analyzed using scanning electron microscopy and laser particle size analyzer At the same time, the catalytic performances of the Al-1 and as-prepared Al powder on the thermal decomposition of ammonium perchlorate (AP) are studied through thermogravimetric and differential scanning calorimetry analysis The results revealed that compared with pure AP, the exothermic peak temperature of AP/Al-1, AP/thicker flake Al powder (Al-2) and AP/thinner flake Al powder (Al-3) mixtures are reduced The activation energy of AP/Al-1, AP/Al-2 and AP/Al-3 mixtures is reduced by 37, 168 and 176%, respectively The reaction rate constant of AP/Al-1, AP/Al-2 and AP/Al-3 mixtures grows by 33, 180 and 325%, respectively
14 citations