链式含能金属配合物[Cu·pac·NO_(3)·H_(2)O]的合成与表征及其对RDX热分解的影响

Syntheses and characterization of chain energetic metalcomplex[Cu·pac·NO_(3)·H_(2)O]and its effect on thethermal decomposition of RDX

使用含能金属配合物作为推进剂的燃烧催化剂不仅可以提高催化活性还可以起到增添能量的作用。以2-吡嗪羧酸(pac)作为配体,合成了链式含能金属配合物[Cu·pac·NO_(3)·H_(2)O](1),通过傅里叶红外光谱(FTIR)和X射线衍射(XRD)对该配合物1进行了表征,发现中心铜离子与3个氮原子及2个氧原子连接并且与2-吡嗪羧酸螯合形成一个五元环,并通过同步热分析仪(TG-DSC)对配合物1的热分解过程进行了分析。将配合物1与黑索金(RDX)以不同比例混合,通过差示扫描量热法(DSC)研究了两者的相容性及催化效果;并且分别用Strink、Kissinger和Ozawa-Doyle方法研究了该混合物热分解过程的动力学参数。研究表明,配合物1对RDX有一定的催化作用;有作为硝胺类推进剂的燃烧催化剂的潜力。

Using energetic metal complexes as combustion catalysts for propellants can not only improve catalytic activity but also increase energy.A chain energetic metal complex[Cu·pac·NO_(3)·H_(2)O](1)was synthesized by using 2-pyrazine carboxylic acid as ligand.The complex 1 was characterized by Fourier transform infrared spectroscopy(FTIR)and X-ray diffraction(XRD).The central copper ion is linked to three nitrogen atoms and two oxygen atoms and chelated with 2-pyrazine carboxylic acid to form a five-membered ring.The thermal decomposition process of complex 1 was analyzed by synchronous thermal analyzer(TG-DSC).The compatibility of the two and the catalytic effect on RDX were studied by differential scanning calorimetry(DSC).The compatibility of the two is good and the kinetic parameters of the thermal decomposition process of the mixture(complex 1∶RDX=1∶9)were studied by Strink,Kissinger and Ozawa-Doyle methods,respectively.Compared with pure RDX.As a result,[Cu·pac·NO_(3)·H_(2)O]has a certain catalytic effect on RDX,compared to Pb complexes,complexes 1 are more environmentally friendly and has the potential to be a combustion catalyst for nitramine propellants.