The Catalytic Effect Of Oxalate And Spinel Type Oxides On The Thermal Decomposition Of Ap

Nano-CuCo₂O₄ and nano-CuCr₂O₄ were separately prepared by salt-assisted solution combustion synthesis. Preparing conditions were studied, such as calcining temperature, species and amounts of fuels, as well as the nature and amount of inert salt, etc. The prepared nano-CuCo₂O₄ and nano-CuCr₂O₄ were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), Fourier transform infrared spectroscopy (FT-IR), Laser Raman Spectroscopy (LRS) and scanning electron microscope (SEM). The results showed that the particls of CuCo₂O₄ and CuCr₂O₄ were almost cubic-like, and the sizes were about 50nm and 150nm, respectively, with good dispersion.The catalysis performance of the thermal decomposition of ammonium perchlorate (AP) by nano-CuCo₂O₄ and nano-CuCr₂O₄ were studied by differential thermal analysis (DTA). It was found that their catalysis performance on thermal decomposition of AP were superior to a single-component nano-metal oxides, such as CuO, Co₃O₄ and Cr₂O₃, etc. This was probably related to the specific spinel structure.Transition metal and rare earth oxalates were prepared by precipitation. The prepared oxalates were characterized by XRD, FT-IR, Raman and SEM. The results indicated that the prepared micron sample powder had perfect crystalline structure and uniform distribution of particle size, while the sample powder were agglomerated badly. Metal oxides were formed in situ by oxalates. The new ecological nano-oxide showed better catalysis performance on thermal decomposition of AP. The thermal decomposition of oxalates and its catalysis performance on thermal decomposition of AP were studied by TG-DTA, and the catalytic mechanism was discussed preliminarily. The data indicated that the oxalates have good catalytic effect on the thermal decomposition of AP. This has provided a new idea of catalyst preparation for the thermal decomposition of AP.