Abstract
Ba(NO3)2, as a general oxidizer in the field of pyrotechnics, is known to be too hard to ignite in further application. In this paper, porous Ba(NO3)2 was prepared by chemical crystallization to obtain high-sensitivity ignition. The physicochemical properties of the prepared Ba(NO3)2 were characterized via scanning electron microscopy (SEM) and X-ray diffraction (XRD), and its thermal properties when mixed with metal oxides were studied via DTA―TG analysis. The SEM image showed that the prepared Ba(NO3)2 is a porous structure with poor regularity. XRD results revealed that the crystal form of the prepared Ba(NO3)2 did not change intensively. In addition, DTA―TG analysis concluded that the metal oxides affected the decomposition temperature of Ba(NO3)2. The initial decomposition temperatures of the mixtures decreased as follows: Ba(NO3)2 (582.0 °C) ＞ porous Ba(NO3)2 (567.8 °C) ＞ Ba(NO3)2 ⁄ NiO (564.2 °C) ＞ porous Ba(NO3)2 ⁄ Cu2O (563.5 °C) ＞ porous Ba(NO3)2 ⁄ Fe2O3 (556.5 °C) ＞ porous Ba(NO3)2 ⁄ CoO (551.6 °C).
