羧基氧桥联稀土功能配合物的热化学研究

项目名称： 羧基氧桥联稀土功能配合物的热化学研究

项目编号： No.21473049

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 张建军

作者单位： 河北师范大学

项目金额： 88万元

中文摘要： 稀土配合物合成、结构和性能的研究在光学、磁学、催化及生物活性等领域具有重要的理论意义和应用价值。本课题采用水热法或溶液沉淀法，设计合成具有优良发光性能、磁性及潜在应用价值的羧基氧桥联稀土功能配合物。通过红外光谱、紫外光谱、拉曼光谱、热分析和单晶衍射等技术，对稀土配合物的结构进行表征。采用同步热分析-红外光谱联用等技术，研究热分解反应速率及反应热，用三维红外光谱表征热分解过程中气体产物组成，阐明配合物的热分解反应机理。采用新的多重扫描反应动力学处理方法，研究配合物的热分解反应的动力学及热力学，给出相应的动力学和热力学参数以及动力学方程。用微量热或差示扫描量热法研究稀土功能配合物的摩尔热容、焓、熵和吉布斯自由能等热力学性质。通过对配合物的结构、发光性能、磁性、生物活性、热分解反应动力学及基础热力学性质进行系统研究，并进行相互关联，为探索发现和高效利用新型稀土多功能复合材料提供有价值的科学依据。

中文关键词： 热化学；热力学性质；摩尔热容；热分解反应动力学；稀土配合物

英文摘要： Study on synthesis, structure and properties of rare earth compexes, has the important theory significance and application value in the optical, magnetic, catalytic and biological activity etc. The carboxylate oxygen bridged rare earth complexes with excellent luminescent properties and potential value will be synthesized by hydrothermal or solution method. The structures of rare earth complexes will be characterized by elemental analysis, IR, UV, Raman spectra,thermal analysis and single crystal diffraction technology, etc. Thermal decomposition rate and reaction heat will be innvestigated by using TG-DSC/IR system. The thermal decomposition mechanism of the title complexes will be illustrated, and the evolved gas will be characterized by using three-dimensional IR spectra. The thermal decomposition kinetics and thermodynamics will be researched using the new reaction kinetic methods. And the kinetic models of thermal decomposition reactions, the corresponding kinetic and thermodynamic parameters will be obtained. Thermodynamic properties of rare earth complexes including heat capacity, enthalpy, entropy and gibbs free energy, etc. will be studied by microcalorimetry and DSC.The luminescent, antibacterial activity and magnetic performance of the title complexes will be investigated, and will be related. These results will provide valuable scientific foundation for exploring and discovering of new multi functional composite materials.

英文关键词： Thermochemistry;thermodynamic properties;molar heat capacity;thermal decomposition kinetics;rare earth complexes