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Nano Bi 2 WO 6 was prepared by hydrothermal method and characterized by XRD, SEM and EDS. Catalytic decomposition effects of nano-Bi 2 WO 6 on AP, RDX and HMX were studied by DSC method. Nano Bi 2 WO 6 can reduce the decomposition temperature and apparent activation energy of decomposition process. The thermal behaviors of Bi 2 WO 6 -DB propellant were studied. The self-accelerating decomposition temperature and critical temperature of thermal explosion are 168.3 and 178.1 C, respectively. Nano Bi 2 WO 6 used as burning catalyst of NG/NC propellant can greatly increase the burning rate, decrease the pressure exponent and form specific high-pressure "platform" at 16-22 MPa.Nano Bi 2 WO 6 exhibits good application performance in solid propellant.

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Copper β‐resorcylate (cupric 2,4‐dihydroxy‐benzoate, β‐Cu) nanoparticles were prepared at a large‐scale via a facile wet mechanical grinding method and vacuum freeze‐drying process. The as‐prepared β‐Cu nanoparticles were characterized by powder X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Fourier‐transform infrared spectroscopy (FT‐IR). The results revealed that the nano‐sized β‐Cu is of semi‐spherical shape and of homogeneous distribution, with a fairly uniform size of 100 nm. The formation mechanism of β‐Cu nanoparticles in the whole process was discussed in detail. Furthermore, the catalytic properties of as‐obtained β‐Cu were investigated. The TG/DSC study showed that nano‐sized β‐Cu could be a promising additive for accelerating the thermal decomposition of ammonium perchlorate (AP).

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