乙炔银-硝酸银的热分解特性  

Thermal Decomposition Characteristics of Silver Acetylide-Silver Nitrate(Ag_(2)C_(2)·Ag NO_(3))

作　　者：徐海斌[1] 徐畅 魏欣 万冲 徐抗震[2] XU Hai-bin;XU Chang;WEI Xin;WAN Chong;XU Kang-zhen(Northwest Institute of Nuclear Technology,Xi′an 710024,China;School of Chemical Engineering,Northwest University,Xi'an 710069,China)

机构地区：[1]西北核技术研究所,陕西西安710024 [2]西北大学化工学院,陕西西安710069

出　　处：《含能材料》2022年第7期666-672,共7页Chinese Journal of Energetic Materials

摘　　要：为了促进光敏炸药乙炔银-硝酸银配合物(Ag_(2)C_(2)·Ag NO_(3))的稳定生产和应用,采用X射线粉末衍射仪、傅里叶红外光谱仪、扫描电镜、差示扫描量热仪和热重-质谱-红外三联用技术等对其结构形貌和热分解特性进行了研究。结果表明,制备的Ag_(2)C_(2)·Ag NO_(3)呈纳米球状,粒径在400~500 nm之间;Ag_(2)C_(2)·Ag NO_(3)只有1个放热分解过程,10.0℃·min^(-1)升温速率下分解峰温为234.9℃,分解过程失重率为8.72%,放热量高达1449 J·g^(-1),分解过程的表观活化能和指前因子分别为108.9 k J·mol^(-1)和10^(8.94)s^(-1);Ag_(2)C_(2)·Ag NO_(3)的气相分解产物为NO、NO_(2)和CO_(2)。To promote the stable production and wide application of silver acetylide-silver nitrate(Ag_(2)C_(2)·Ag NO_(3)),the structural morphology and thermal decomposition characteristics were systematically studied by X-ray powder diffractometry,Fourier tranform infrared spectrometer,scanning electron microscopy,differential scanning calorimeter and thermogravimetric-mass-infrared spectrometry techniques.The results indicate that the prepared Ag_(2)C_(2)·Ag NO_(3) sample is in the form of nanospheres with particle sizes ranging from 400 to 500 nm.There is only one exothermal decomposition process of Ag_(2)C_(2)·Ag NO_(3) with a peak temperature of 234.9℃,a weight loss of 8.72%,and a heat release of 1449 J·g^(-1),at a heating rate of 10℃·min^(-1).The apparent activation energy and pre-exponential constant of decomposition process are obtained as 108.9 k J·mol^(-1) and 10^(8.94)s^(-1),respectively.Moreover,the gaseous decomposition products of Ag_(2)C_(2)·Ag NO_(3) were NO,NO_(2) and CO_(2).

关 键 词：乙炔银-硝酸银 TG-MS-FTIR 热分解 表观活化能 气体产物 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O64[理学—物理化学]