钴基配合物催化高氯酸铵热分解行为  

Thermal decomposition behavior of ammonium perchlorate catalyzed by cobalt-based complexes

作　　者：周鹏[1] 张思巍 任卓群 唐晓林 张宽 张依福 黄驰[1] ZHOU Peng;ZHANG Siwei;REN Zhuoqun;TANG Xiaolin;ZHANG Kuan;ZHANG Yifu;HUANG Chi(College of Chemistry and Molecular Sciences,Wuhan University,Wuhan 430072,China;Hubei University of Science and Technology,Xianning 437100,Hubei,China)

机构地区：[1]武汉大学化学与分子科学学院,武汉430072 [2]湖北科技学院,湖北咸宁437100

出　　处：《材料工程》2025年第4期107-113,共7页Journal of Materials Engineering

摘　　要：通过添加燃速催化剂可以影响氧化剂的分解进而有效调控固体推进剂的燃速。MOFs因其在催化高氯酸铵(ammonium perchlorate,AP)热分解中的良好特性开始崭露头角,现有研究更多集中在金属中心的改变,并未讨论配体对催化过程的影响。本工作通过使用3种不同的配体(2-甲基咪唑,对苯二甲酸和1,2,4,5-苯四胺)制备了3类Co基配合物(Co-CP)催化剂,分别讨论了对AP热分解行为的影响。结果表明,由于配体的差异导致3种Co-CP作用在AP的分解行为存在显著差别。Co-ZIF可以显著降低AP分解温度的同时提升体系放热;Co-BDC由于相对较高的热稳定性影响了催化AP热分解效果;Co-BTA可以通过配体分解释放NH3导致AP的低温分解的延后。通过热重-红外联用(TG-IR)测试捕获了反应过程中的气相产物,进一步探索并讨论了不同Co-CP催化AP分解的可能机理。该研究提供了一种金属配合物类燃速催化剂的设计思路。The addition of a burning rate catalyst can affect the decomposition of oxidants and effectively regulate the burning rate of solid propellants.MOFs have aroused attentions due to their excellent properties in catalyzing the thermal decomposition of ammonium perchlorate(AP),and existing research has mainly focused on changes in metal centers,without discussing the influence of ligands on the catalytic process.We prepare three types of Co-based complexes(Co-CP)catalysts using three different ligands(2-methylimidazole,terephthalic acid,and 1,2,4,5-phenylenetetramine)and discuss their effects on the thermal decomposition behavior of AP.The results indicate significant differences in the decomposition behavior of the three Co-CPs in AP due to differences in ligands.Co-ZIF can significantly reduce the decomposition temperature of AP while enhancing the heat release of the system.The relatively high thermal stability of Co-BDC affects the catalytic effect of AP thermal decomposition.Co-BTA can delay the low-temperature decomposition of AP by releasing NH3 through ligand decomposition.The gas-phase products during the reaction process are captured through thermogravimetric infrared spectroscopy(TGIR)testing,and the possible mechanisms of AP decomposition catalyzed by different Co-CPs are further explored and discussed.This study provides a design approach for a metal complex-based combustion rate catalyst.

关 键 词：固体推进剂 高氯酸铵 燃烧催化剂 MOF 热分解 

分 类 号：TB34[一般工业技术—材料科学与工程] O643[理学—物理化学]