Preparation And Catalytic Properties Of The Compounds. Nano-Prussian Blue

Prussian-blue analogue nanoparticles(PBAN) were synthesized by liquid dispersion deposition method in the paper.The effects of various parameters on the particle size and morphology of the products were discussed.The catalytic properties of PBAN on the thermal decomposition of AP and RDX were studied.The detail were described as below.Firstly, nano-Pb2Fe(CN)6 protected by poly(vinylpyrrolidone)(PVP) were prepared in glycol solution.The products were identified as monoclinic structure by powder X-ray diffraction(XRD).Transmission electron microscopy(TEM) images showed that well dispersed and narrow size distribution were successfully prepared.The effects of the solution medium, the initial reactants concentration and the feed ratio of Pb to the polymer monomer (PVP,Mw=40000) on the size and morphology of nanoparticles were discussed in the paper.Nano-Cu3[Co(CN)6]2 were synthesized by using PVP as surfactant in water solution. TEM images showed that stable and well dispersed nanoparticles with fairly narrow size distribution were successfully prepared.The products were identified as face centered cubic structure by XRD.The effects of feed ratio of the polymer monomer on the size and morphology of nanoparticles were also discussed in the paper.Secondly,the catalytic properties of micro-Pb2Fe(CN)6,nano-Pb2Fe(CN)6 and nano-Cu3[Co(CN)6]2 on the thermal decomposition of AP were studied, which with the different percentages respectively. The results showed that, all types of PBAN had catalytic ability on the thermal decomposition of AP at different extent and more than micro-Pb2Fe(CN)6 or micro- Cu3[Co(CN)6]2.As the increase of PBAN percentages, the peak temperature of the thermal decomposition of AP were droped,the catalytic ability on the thermal decomposition of AP were also increased. When the quality percentages of PBAN were equal, the catalytic effect of nano-Cu3[Co(CN)6]2 were better than that of nano-Pb2Fe(CN)6.Finally, the thermal decomposition behaviors of RDX affected by PBAN and micro-Prussian-blue analogue were studied, especially by PBAN at different quality ratios.The results showed that, the peak temperature of the thermal decomposition of RDX was decreased by using PBAN. As the increase of nano-catalyst percentage, the value of catalytic active were increased, and the width of thermal decomposition peak were narrowed. And with the quality ratios of nano-catalyst increasing, the peak temperature of thermal decomposition were droped.