基于PEI界面作用增强的AP热分解催化性能

(1. 西南科技大学 环境友好能源材料国家重点实验室, 四川 绵阳 621010; 2.西南科技大学 材料与化学学院,四川 绵阳 621010)

物理化学; 高氯酸铵; AP; 聚乙烯亚胺; PEI; 催化热分解; 静电自组装

Thermal Decomposition Catalysis Performance of AP Based on PEI Interfacial Enhancement
XU Hong-peng1,2,HUANG Qi1,JIN Bo1,PENG Ru-fang1

(1.State Key Laboratory of Environment-friendly Energy Materials,Southwest University of Science and Technology, Mianyang Sichuan 621010, China; 2.School of Materials and Chemistry, Southwest University of Science and Technology, Mianyang Sichuan 621010, China)

physical chemistry; ammonium perchlorate; polyethyleneimine; PEI; catalytic thermal decomposition; electrostatic self-assembly

DOI: 10.14077/j.issn.1007-7812.202306004

备注

为了改善高氯酸铵(AP)的热分解性能, 基于聚乙烯亚胺(PEI)本征的正电荷和氨基基团,在与负电荷AP发生静电自组装包覆的同时,吸附铜金属催化剂于AP表面,制备了AP/PEI/Cu(ClO4)2包覆样品,并通过DTA和TG-DSC等热分析技术研究了其热分解行为; 通过SEM、XPS、XRD、IR、ICP-OES和Zeta电位等测试手段对AP/PEI/Cu(ClO4)2包覆样品的形貌与结构进行了表征。结果表明,与原料AP相比,AP/PEI/Cu(ClO4)2包覆样品的高温分解峰温降低了94.2℃,表观放热量增加了512.91J/g,证实PEI/Cu(ClO4)2对AP的热分解具有良好的催化效果; PEI的加入能增强金属催化剂和AP的界面作用,使得催化剂更均匀地分布于AP表面,从而促使金属催化剂更好地发挥热分解催化作用。
In order to improve the thermal decomposition performance of AP, based on the intrinsic positive charge and amino group of polyethyleneimine(PEI), the AP/PEI/Cu(ClO4)2 coated sample was prepared by adsorbing copper metal catalyst on the surface of AP while electrostatic self-assembly coating with negative charge AP, and its thermal decomposition behavior was studied by thermal analysis technology. The morphology and structure of AP/PEI/Cu(ClO4)2 coated samples were characterized by SEM, XPS, XRD, IR, ICP-OES, and Zeta potential. The results show that compared with raw AP, the high temperature decomposition peak temperature of AP/PEI/Cu(ClO4)2 coated sample is reduced by 94.2℃, and the apparent heat release is increased by 512.91J/g, which confirmed that PEI/Cu(ClO4)2 has a good catalytic effect on the thermal decomposition of AP. The addition of PEI can enhance the interfacial interaction between metal catalyst and AP, making the catalyst more evenly distributed on the surface of AP, promoting the better catalytic effect of metal catalyst on the thermal decomposition.