二维聚硫杂酞青铜的非等温热解动力学和机理的研究(英文)

Study of Non Isothermal Thermal Decomposition Kinetics and Mechanism of Two Dimesiond Poly (Copper Octathiotetraazaporphyrin) *

用ＴＧ－ＤＴＧ技术，对二维聚硫杂酞青铜（ＰＣｕＳ８Ｐｃ）的非等温热解动力学进行了研究．结果表明，在静态氮气气氛和升温速率为２０℃·ｍｉｎ－１时，ＰＣｕＳ８Ｐｃ的热分解为３步，其热分解机制均受随机核化和生长（Ａｍ）控制．各步分解的活化能分别为４９．８０，５４．０３和１６２．３３ｋＪ·ｍｏｌ－１，指前因子分别为１．１９×１０７，１．４４×１０４和１．１０×１０１０ｍｉｎ－１．

By mean of TG DTG,the kinetics of non isothermal thermal degradation of two dimensional poly (copper octathiotetraazaporphyrin)(PCuS 8Pc) is studied in a static nitrogen atmosphere at heating rate of 20 ℃·min -1 .The result shows the decomposition of PCuS 8Pc takes place in three stages.The models of the thermal decomposition of PCuS 8Pc is dominated by random nucleation and subsequent growth process ( A m).It was found that m is 0.75, 0.70 and 0.45 . The activation energy ( E a ) is 49.80, 54.03 and 162.33 kJ·mol -1 , the pre exponetial factor ( A ) is 1.19×10 7, 1.44×10 4 and 1.10×10 10 min -1 for each stage respectively.