Abstract
Ni/Co/Cu/Fe nano-composite oxides (Ni/Co/Cu/Fe–NCOs) were prepared by calcination of Ni/Co/Cu/Fe hydrotalcites (Ni/Co/Cu/Fe–HTs) precursors. Ni/Co/Cu/Fe–NCOs were used as new catalysts on improving thermal decomposition of ammonium perchlorate (AP). Their catalytic activities were investigated using DTA and TG–MS. The results revealed that Ni/Co/Cu/Fe–NCOs exhibited NiO and spinel phase with high specific surface areas of 90–120 m2 g–1. They have homogenous particles with average crystallite size in the range of 50–60 nm. The thermal decomposition process of AP can be accelerated by the addition of Ni/Co/Cu/Fe–NCOs. Ni/Co/Cu/Fe–NCOs achieved the purpose of improving thermal decomposition of AP based on the presence of superoxide ion (O2–) on the surface of Ni/Co/Cu/Fe–NCOs.
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