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为研究配位聚合物｛[Cu(H2bttc)(H2O)3·]3H2O｝n(H2bttc=1,2,4,5-benzenetetracarboxylate)的热分解机理和非等温反应动力学进行了DSC和TG-DTG热分析。由热分析结果和FTIR光谱推测了其热分解机理;将Kissinger法、Ozawa法、积分法和微分法得到的动力学参数进行比较确定了第一个失重过程最可能的动力学模型函数。配位聚合物的X射线单晶结构分析表明它由[Cu(H2bttc)(H2O)3]n分子链组成,并有客体水分子通过分子间氢键附着在分子链上。这一结构特点与热分析结果相一致。还有一种氢键将分子链连接起来形成二维框架,这一框架在失去配位水和结晶水后到553K开始分解。
In order to study the thermal decomposition mechanism and non-isothermal reaction kinetics of the coordination polymer {[Cu (H2bttc) (H2O) 3 · 3H2O} n (H2bttc = 1,2,4,5-benzenetetracarboxylate) DTG Thermal Analysis. The thermal decomposition mechanism was deduced from the thermal and FTIR spectra. The kinetic parameters of Kissinger method, Ozawa method, integration method and differential method were compared to determine the most likely kinetic model function of the first weight loss process. X-ray crystal structure analysis of the coordination polymer shows that it is composed of [Cu (H2bttc) (H2O) 3] n molecular chains and guest water molecules attach to the molecular chains through intermolecular hydrogen bonds. This structural feature is consistent with the thermal analysis. There is also a hydrogen bond to link the molecular chains to form a two-dimensional framework that begins to decompose at 553K after losing coordination water and water of crystallization.