Investigation on the Thermal Behavior of Ammonium Dinitramide with Different Copper‐Based Catalysts
Li Yajin, Wuxi Xie, Haiyang Wang, Hongtao Yang, Hai-Tao Huang, Yunfei Liu, Xuezhong Fan
Abstract
Abstract A systematic investigation of the effects of different copper catalysts on the thermal behavior for ammonium dinitramide (ADN) was performed. ADN/copper catalyst mixtures were prepared in the ratio of 100/5 by grinding, and all samples were subjected to TG‐DSC studies using thermo‐gravimetric analysis coupled to Fourier Transformed Infrared Spectrometry (TGA‐FTIR) and Mass Spectrometry, which obtained the detailed information of evolved gas products on pyrolysis and oxidative degradations. Four copper‐series catalysts including copper chromate (CuCrO 4 ), copper chromite (Cu 2 Cr 2 O 5 ), copper 2,4‐dihydroxybenzoate ( β ‐Cu) and metal‐organic framework copper (MOF−Cu) were employed to research the appearance morphology and thermal behavior of the samples. TG‐DSC analysis of the decomposition for ADN/catalyst revealed that copper chromite and β ‐Cu exhibit higher catalytic activity than copper chromate due to their greater acceleration of thermal decomposition for ADN. Besides, though MOF−Cu slightly promote the thermal decomposition of ADN, the ADN/MOF−Cu system release more heat during exothermic reaction owing to the high energy of MOF−Cu.