Effects of metal organic framework Fe-BTC on the thermal decomposition of ammonium perchlorate

Abstract

A metal organic framework (MOF) material, Fe-benzene-1,3,5-tricarboxylate (Fe-BTC), was investigated as a candidate for the combustion catalyst of solid propellants containing ammonium perchlorate. The thermal decomposition of ammonium perchlorate (AP) was found to be evidently enhanced in the presence of Fe-BTC. Unlike the pristine AP, the thermal decomposition and phase transition of AP in the AP/Fe-BTC system occur at almost the same temperature, resulting in a reduced decomposition temperature of 243 °C, which is 36 °C lower than that of the pristine AP. Moreover, introducing 1.0 wt% of Fe-BTC to BAMO–THF propellant with AP as the oxidizer could improve its combustion performance by effectively decreasing the pressure exponents.