| 钛取代杂多酸盐甘氨酸超分子化合物的合成及热分解动力学研究 |
| |
| 引用本文： | 马荣华,马虹钰. 钛取代杂多酸盐甘氨酸超分子化合物的合成及热分解动力学研究[J]. 化学试剂, 2012, 34(1): 23-26,30 |
| |
| 作者姓名： | 马荣华 马虹钰 |
| |
| 作者单位： | 齐齐哈尔大学化学与化学工程学院,黑龙江齐齐哈尔,161006 |
| |
| 基金项目： | 黑龙江省教育厅基金资助项目，黑龙江省自然科学基金资助项目 |
| |
| 摘 要： | 用室温固相法合成了Keggin结构单取代杂多硅钨酸盐甘氨酸超分子化合物α-K4(HGly)3[SiW11Ti(H2O)O39].4H2O,用IR、UV、TG-DTA、X-射线粉末衍射等方法对其进行了表征。结果表明:甘氨酸阳离子与杂多阴离子主要靠静电作用结合,超分子化合物中杂多阴离子仍保持Keggin结构。同时,采用TG-DTA技术研究了标题化合物在氮气气氛中的热分解机理及非等温动力学,用Coats-Redfern的积分法和Achar的微商法对配合物的非等温动力学数据进行分析,得出了热分解反应的机理函数、动力学参数以及分解反应的活化能E和lnA。
|
| 关 键 词： | 杂多钨酸盐 甘氨酸 超分子化合物 热分解动力学 |
Synthesis and non-isothermal kinetics of titanium substituted heteropolytungstates and glyine supermolecular compounds |
| |
| MA Rong-hua , MA Hong-yu. Synthesis and non-isothermal kinetics of titanium substituted heteropolytungstates and glyine supermolecular compounds[J]. Chemical Reagents, 2012, 34(1): 23-26,30 |
| |
| Authors: | MA Rong-hua MA Hong-yu |
| |
| Affiliation: | (College of Chemistry and Engineering,Qiqihar Univercity,Qiqihar 161006,China) |
| |
| Abstract: | Supermolecular compounds of glycine monosubstituted heteropolytungstates with Keggin structure α-K4(HGly)3[SiW11Ti(H2O)O39]·4H2O were synthesized by solid phase reaction in room temperature.The structure was characterized by IR,UV,TG-DTA,X-ray diffraction.The results indicate that glycine combines the electrostatic effect with heteropolytungstates.The heteropoly anion still remains its Keggin structure in supermolecular compounds.The non-isothermalkinetic data were analyzed with the used Coats-Redfern integral method and Achar differential method.The mechanism function,kinetic parameters,apparent activation energy E and pre-exponential factor lnA of the thermal decomposition were obtained. |
| |
| Keywords: | heteropolytungstates glycine supermolecule thermal decomposition kinetics |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
