12-钼磷酸-N,N-二甲基苯胺电荷转移配合物的制备及热分解动力学研究  

Synthesis and properties of charge-transfer complex of N,N-dimethylaniline substituted 12-molybdophosphoric acid

作　　者：马荣华[1] 杜垚[1] 

机构地区：[1]齐齐哈尔大学化学化工学院,黑龙江齐齐哈尔161006

出　　处：《化学试剂》2010年第7期583-587,599,共6页Chemical Reagents

基　　金：黑龙江省自然科学基金资助项目(2007-15)

摘　　要：合成了标题化合物,用元素分析、IR、TG-DTG、XRD等方法对其进行了表征。结果显示该化合物仍保持杂多阴离子的Keggin结构的基本特征。同时,采用TG-DTG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,运用Coats-Redfern积分法、胡荣祖-高红旭-张海法、Achar-Brindley-Sharp-Wendworth微分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3步分解反应的活化能E和lnA。The charge-transfer complex（C6H5（CH3）2N）3-PMo12O40·9H2O was prepared using N,N-dimethylaniline and 12-molybdophosphoric acid with Keggin structure.The complex was characterized by means of elementary analysis,IR,TG-DTA,and X-ray diffractometry.The results indicated that the heteropoly anions still retained its Keggin structure in supermolecular compounds.The non-isothermal kinetic data were analyzed by the Coats-Redfern integral method,the Hurongzu-Gaohongxu-Zhanghai method,and the Achar-Brindley-Sharp-Wendworth differential method.The mechanism function,kinetic parameters,apparent activation energy E and pre-exponential factor lnA for the thermal decomposition of the said complex in three steps were obtained.

关 键 词：12-钼磷酸 N N-二甲基苯胺 电荷转移配合物 热分解动力学 

分 类 号：O611.4[理学—无机化学]