Facile fabrication of carbon nanotubes-encapsulated cobalt (nickel) salt nanocomposites and their highly efficient catalysis in the thermal degradation of ammonium perchlorate and hexogen
作者:Haichao Fang、Ruizhe Xu、Lufei Yang、Zhiyuan Mi、Qian He、Hongfei Shi、Liping Jiang、Xiaolong Fu、Guofang Zhang
DOI:10.1016/j.jallcom.2022.167134
日期:2022.12
composite solid propellants, ten cobalt and nickel compounds were encapsulated into the channels of oxidized carbon nanotubes (CNTs) by ultrasonication, which was proven by TEM, SEM, XRD, Raman, XPS, etc. The catalytic performances of the nanocomposites for ammonium perchlorate (AP) and hexogen (RDX) thermal degradation were evaluated by the DSC technique and the results revealed that the composites
为了减少复合固体推进剂中的颗粒聚集和提高金属盐的催化活性,通过超声处理将十种钴和镍化合物包封到氧化碳纳米管(CNTs)的通道中,并通过TEM,SEM,XRD,Raman,XPS,采用DSC技术评价了纳米复合材料对高氯酸铵(AP)和己醇(RDX)热降解的催化性能,结果表明复合材料对AP和RDX的热分解具有显着的影响。其中,5重量。% Co(NO 3 ) 2@CNTs(D1)作为催化剂将AP的放热从746.53 J/g提高到2489.26 J/g,催化效率高于CoO@CNTs(D1)(1791.29 J/g),提高了AP的峰值温度在406.6 °C至312.4 °C的高温分解阶段 ;而1重量。% Ni(NO 3 ) 2 @CNTs(D1)作为添加剂使RDX的热解热提高了大约三倍,并且比NiO@CNTs(D1)的热解热更活跃。动力学研究表明,随着 Co(NO 3 ) 2 @CNTs(D1) 和