羧酸钛（Ⅳ）　配合物的合成和热分解反应

Studies on the Synthesis and Thermal Decomposition Reactions of Titanium (Ⅳ) Dicarboxylates

通过四氯化钛分别与草酸、丙二酸、丁二酸、戊二酸和己二酸反应，制得Ｔｉ２Ｏ２（ＯＨ）２Ｌ·ｎＨ２Ｏ（Ｌ＝二元羧酸根，ｎ＝１．５～３）５种新的固态配合物．用元素分析、ＴＧ和ＩＲ分析，确定了产物的组成．利用ＴＧ，ＤＳＣ，ＩＲ和Ｘ－射线衍射法对该配合物在空气气氛下热分解阶段及中间产物进行了确认．计算机求解热分解反应各阶段的活化能 ，焓变△ｒＨ和熵变△ｒＳ．

Five new solid complexes of Ti (Ⅳ) dicarboxylate were prepared by the reaction of titanium tetrachloride with oxalic acid, malonic acid, succinic acid, glutaric acid,and adipic acid, respectively. The general formula of these complexes is Ti2O2 (OH)2L ·nH2O (L=dicarboxylate, n=1. 5￣3). The composition of complexes were determined by elemental, TG and IR analyses. The thermal decomposition stages and the intermediates of the complexes were examined using TG, DSC, IR and X-ray diffraction. The activation energy , enthalpy change △rH and entropy change △rS were determined from TG and DSC curves.