Effects of Nanometer Ni, Cu, Al and NiCu Powders on the Thermal Decomposition of Ammonium Perchlorate

Abstract

A study of the decomposition behaviour for Ammonium Perchlorate(AP) was carried out by differential thermal analysis and the two decomposition peaks were observed. The high temperature peak was found to shift to lower temperatures, but the corresponding shift in the low temperature peak was smaller due to the effect of nanometer metal powders. Results shows that Cu and NiCu nanopowders decreased both the high and low decomposition temperature, while Ni and Al nanopowders just decreased the high decomposition temperature and increased the low decomposition temperature. Metal micron‐sized powders show catalytic effects on the thermal decomposition of AP, but their effects are less than that of nanometer metal powders. With the increase in content, nanometer metal powders enhanced their catalytic effect on the high temperature decomposition of AP, however their effect was weakened on the low temperature decomposition.

Thermal Decomposition of Ammonium Perchlorate in thePresence of Nanosized Ferric Oxide

“…Liu, et al reported a heat release of 1.32 kJ/g for 30 nm sized Ni particles, which is only 30 per cent as compared to the results obtained 9 . Also in both the 5 Wt per cent and 2 Wt per cent of catalyst mixing, the heat release was as large as 70-80 per cent more than the pure AP, indicating enhancement in decomposition of AP due to very fine size of Fe 2 O 3 .…”

“…The nanomaterials show novel properties mainly due to their reduced dimensions, which result in domination of the surface over bulk [9][10][11] . The size of nanoparticles especially in the range of 1-10 nm, strongly influences the catalytic properties, which is the reason why research efforts are directed towards the development of reliable methods for the size selective preparation of these materials.…”

Thermal Decomposition Kinetics of Hexanitrohexaazaisowurtzitane/Ammonium Perchlorate

“…Many papers have been published concerning the thermal decomposition of neat HNIW [4][5][6] or AP [7][8][9][10]. However, few have addressed the thermal decomposition and reaction kinetics of the HNIW/AP mixture.…”

The influence of VO2(B) nanobelts on thermal decomposition of ammonium perchlorate

“…as the additives to which the thermal decomposition of AP is extremely sensitivite [1][2][3][4][5]. Liu et al [6] reported that Cu, Al and Ni particles can lower the thermal decomposition temperature (T d ) of AP to 347, 425 and 364°C, respectively. The T d of AP was reduced to 358°C by Cu/Fe hydrotalcite-derived mixed oxides [7].…”