Development of bimetallic spinel catalysts for low-temperature decomposition of ammonium dinitramide monopropellants

作     者：C.Shamjitha Anuj A.Vargeese C.Shamjitha;Anuj A.Vargeese

作者机构：Laboratory for Energetic and Energy Materials Research(LEEMR)Department of ChemistryNational Institute of Technology CalicutKozhikode 673601India 

出 版 物：《Defence Technology（防务技术）》 (Defence Technology)

年 卷 期：2023年第30卷第12期

页      面：47-54页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financial support by DST-SERB (Grant No.SRG/2021/001182) DRDO (Grant No.ARMREB/HEM/2021/241)is gratefully acknowledged 

主　　题：ADN monopropellant Mixed metal oxides Doped spinels Catalytic decomposition 

摘      要：Ammonium dinitramide(ADN)based liquid monopropellants have been identified as environmentally benign substitutes for hydrazine ***,new catalysts are to be developed for making ADN monopropellants cold-start *** the present study,performance of Co and Ba doped CuCr_2O_4 nanocatalysts prepared by hydrothermal method was evaluated on the decomposition of aqueous ADN solution and ADN liquid monopropellant(LMP103X).The catalysts were characterized by PXRD(Powder X-ray Diffraction),FTIR(Fourier Transform Infrared spectroscopy),SEM(Scanning Electron Microscopy),TEM(Transmission Electron Microscopy),EDS(Energy Dispersive X-ray Spectroscopy),and XPS(X-ray Photoelectron Spectroscopy).The nanosize was confirmed by SEM and TEM,while the nanoflake morphology was confirmed by the SEM ***,we obtained the elemental composition from the EDS *** investigated the catalytic activity of the catalysts by thermogravimetric(TG)analysis and the developed catalysts lowered the decomposition temperature of ADN monopropellant by about 55℃.The XPS analysis confirmed the presence of metal ions with different chemical ***,increase in the surface area of the catalysts and the mixed active sites as well as the development of oxygen vacancy on the catalyst surface introduced by metal doping are influencing the decomposition temperature of ADN samples.