The application of nano-catalytic materials in molecular perovskite energetic materials is of great significance to promote the development of molecular perovskite energetic materials in explosive formulations and propellants. In this paper, the thermal catalytic effects of CoFe-layered double hydroxide derivative on the molecular perovskite energetic material (DAP-4) were studied. In this study, we successfully prepared a new type of CoFe-based photothermal agent (CoFe-500) by heating CoFe layered double hydroxide nanosheets in an Ar atmosphere at 500 °C. And the micromorphology, structure composition, thermal decomposition performances of CoFe-500 and DAP-4/CoFe-500 composite were characterized. The experimental results showed that with the addition of CoFe-500, the initial decomposition temperature and peak exothermic temperature of DAP-4 showed a decreasing trend. With 10 wt% CoFe-500 added, the initial decomposition temperature and peak exothermic temperature of DAP-4 decreased from 305.6 °C to 166.3 °C and 379.0 °C–322.5 °C, respectively (10 °C/min heating rate). The apparent activation energy (E_a) of pure DAP-4 is 172.27 kJ/mol and 175.13 kJ/mol calculated by the Kissinger and Ozawa method, respectively. And with 10 wt% CoFe-500 added, the E_a is reduced to 119.11 kJ/mol and 122.84 kJ/mol, respectively. The possible thermal catalytic decomposition mechanism of DAP-4/CoFe-500 composites was proposed from the thermal analysis and mass spectrometry test results. This work is meaningful to further understand the decomposition performances of DAP-4 in the presence of nano-layered double hydroxide.

纳米催化材料在分子钙钛矿含能材料中的应用，对于推动分子钙钛矿含能材料在炸药配方和推进剂中的发展具有重要意义。本文研究了CoFe层状双氢氧化物衍生物对分子钙钛矿含能材料（DAP-4）的热催化作用。在这项研究中，我们通过在 500 °C 的 Ar 气氛中加热 CoFe 层状双氢氧化物纳米片，成功制备了一种新型的 CoFe 基光热剂 (CoFe-500)。并对CoFe-500和DAP-4/CoFe-500复合材料的微观形貌、结构组成、热分解性能进行了表征。实验结果表明，随着 CoFe-500 的加入，DAP-4的初始分解温度和峰值放热温度呈下降趋势。添加 10 wt% CoFe-500 后，DAP-4 的初始分解温度和放热峰值温度分别从 305.6 °C 下降到 166.3 °C 和 379.0 °C–322.5 °C（10 °C/min 加热速率）。表观活化能 (通过 Kissinger 和 Ozawa 方法计算的纯 DAP-4 的E _a ) 分别为 172.27 kJ/mol 和 175.13 kJ/mol。添加 10 wt% CoFe-500 后，E _{a 分别}降至 119.11 kJ/mol 和 122.84 kJ/mol。从热分析和质谱测试结果提出了DAP-4/CoFe-500复合材料可能的热催化分解机制。这项工作对于进一步了解DAP-4在纳米层状双氢氧化物存在下的分解性能具有重要意义。