FeCo_(2)O_(4)催化TKX⁃50的分解特性及其热动力学分析  

Catalytic Decomposition Characteristics and Thermodynamic Analysis of TKX⁃50 by FeCo_(2)O_(4)

作　　者：翟安琪 赵海霞 张军梅 郭璟昊 赵碧颖 ZHAI Anqi;ZHAO Haixia;ZHANG Junmei;GUO Jinghao;ZHAO Biying(School of Environment and Safety Engineering,North University of China,Taiyuan 030051,China;Shaanxi Applied Physics and Chemistry Research Institute,Xi’an 710061,China)

机构地区：[1]中北大学环境与安全工程学院,山西太原030051 [2]陕西应用物理化学研究所,陕西西安710061

出　　处：《中北大学学报（自然科学版）》2024年第3期372-382,共11页Journal of North University of China(Natural Science Edition)

基　　金：中北大学重点实验室开放研究基金资助项目(DXMBJJ2021-01)。

摘　　要：为研究双金属氧化剂作为燃烧催化剂在推进剂方面的应用,基于水热法制备了双金属氧化剂FeCo2O4,并采用扫描电子显微镜(SEM)、N2吸脱附测试(BET)、X射线衍射分析(XRD)和X射线光电子能谱分析(XPS)对催化剂的理化性质进行了表征。通过同步热分析仪(TG-DSC)研究了该氧化剂对5,5’-联四唑-1,1’-二氧二羟胺(TKX-50)的催化分解特性及热分解反应动力学参数的影响。结果表明,双金属氧化剂FeCo2O4的加入明显促进了TKX-50的热分解行为,随着双金属氧化剂含量的增加,升温速率为10.0℃·min^(-1)时,复合材料的两个放热峰峰值温度都呈现减小的趋势,最大分别减少了34.0℃和49.7℃。添加双金属氧化剂还会降低复合体系的表观活化能与活化焓值,TKX-50热力学特征参数的降低,证实了双金属氧化剂燃烧催化剂的潜质。In order to study the application of bimetallic oxidants as combustion catalysts in propellants,a bimetallic oxidant FeCo2O4 was prepared using hydrothermal method.The physical and chemical proper-ties of the catalyst were characterized using scanning electron microscopy(SEM),N2 adsorption and desorption testing(BET),X-ray diffraction analysis(XRD)and X-ray photoelectron spectroscopy(XPS).The catalytic decomposition characteristics and thermal decomposition reaction kinetics param-eters of 5,5’-tetrazol-1,1’-dioxodihydroxylamine(TKX-50)were studied using a synchronous thermal analyzer(TG-DSC).The results showed that the addition of bimetallic oxidant FeCo2O4 significantly pro-motes the thermal decomposition behavior of TKX-50.With the increase of bimetallic oxidant content,at 10.0℃·min^(-1) of the heating rate,the peak temperatures of the two exothermic peaks of the composite material show a decreasing trend,with maximum reductions of 34.0℃and 49.7℃,respectively.The addition of bimetallic oxidants also reduces the apparent activation energy and activation enthalpy of the composite system.The decrease in the thermodynamic characteristic parameters of TKX-50 confirms the potential of bimetallic oxidant combustion catalysts.

关 键 词：双金属氧化物 TKX-50 TG-DSC 热动力学参数 热分解 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] TQ426.82[化学工程]