Comprehensive analysis of thermal decomposition and kinetic behavior of ammonium perchlorate in the presence of nitrocellulose-coated nanothermites incorporating in situ synthesized nFe2O3-nitrogen-doped graphene oxide
摘要
In this study, we evaluated the impact of nitrocellulose-coated nanothermites on the thermal properties of ammonium perchlorate (AP). To achieve this, we prepared a nanothermite composed of a fuel mixture (Al and Mg) and iron nanoparticles supported on nitrogen-reduced graphene oxide (NGO@nFe2O3), synthesized via a one-step hydrothermal process. The prepared nanothermite was then coated with nitrocellulose. This mixture was used as a catalyst for AP, in proportions ranging from 3 to 7%. The various energetic formulations, AlMg- NGO@nFe2O3-NC/AP, were then subjected to thorough characterization using techniques such as Fourier-transform infrared (FTIR) spectroscopy, X-ray Diffraction analysis (XRD) and thermogravimetry (TG). Kinetic parameters were evaluated using thermogravimetric data analyzed through multiple isoconversional approaches, including the integral Kissinger–Akahira–Sunose (it-KAS) and Flynn–Wall–Ozawa (it-FWO) models. Simultaneously, the energy output was determined via oxygen bomb calorimetry. The results provide critical insights into the catalytic effectiveness of the AlMg/NGO@nFe2O3/NC composite in enhancing the thermal decomposition and energetic characteristics of ammonium perchlorate (AP).