类石墨型氮化碳的制备及其对AP热分解催化性能研究

Preparation of graphite-like carbon nitride and its catalytic performance for thermal decomposition of ammonium perchlorate

以三聚氰胺为前驱体、半封闭法制备出类石墨型氮化碳(g-C3N4),采用X射线衍射(XRD)、扫描电子显微镜(SEM)、傅里叶红外光谱(FT-IR)对其结构和形貌进行表征,利用热失重(TG)、差热分析(DTA)研究g-C3N4对高氯酸铵(AP)热分解的影响。结果表明,制备出的g-C3N4为层状结构。g-C3N4对AP有较强的催化效果,可使AP的高低温分解峰合并,高温分解温度下降73.8℃。g-C3N4优异的导电性能,在氧化还原循环中能加速电子转移,使AP在更低的温度下分解。

The g-C3N4 was synthesized melamine used as precursor via semi-closed method.The structure and morphology of g-C3N4 were characterized by means of X-ray diffraction(XRD),transmission electron microscopy(SEM)and Fourier transform infrared spectroscopy(FT-IR).The catalysis of g-C3N4 on thermal decomposition of ammonium perchlorate(AP)was investigated bythermal gravimetric analysis(TG)and differential thermal analysis(DTA).The results show that the g-C3N4 has layered structure.The g-C3N4 make the two decomposition peaks of AP combine and the high-temperature decomposition peak value of AP decrease by 73.8 ℃,which exhibits good catalytic performance.The g-C3N4 has excellent conductive properties and can accelerate the electron transfer in the process of oxidation-reduction cycle to make the decomposition of AP at a much lower temperature.