邻苯二甲酸镁的流变相合成及其热稳定性研究  

Rheological phase reaction synthesis and thermal decomposition of magnesium phthalate dihydrate

作　　者：占丹[1] 周新文[1] 张勇[1] 洪建和[1] 张克立[1] 

机构地区：[1]武汉大学化学与分子科学学院,湖北武汉430072

出　　处：《化学试剂》2005年第5期257-260,共4页Chemical Reagents

基　　金：国家自然科学基金资助项目(20071026)。

摘　　要：用流变相反应法合成了二水邻苯二甲酸镁。通过元素分析、X射线粉末衍射、红外光谱确定了它的组成和晶体结构,它为层状结构,属单斜晶系。用TG和DTA研究了它在氮气中的热稳定性,并用GCMS、XRD表征了热分解产物。二水邻苯二甲酸镁在氮气中热分解分为两步:先失去两个结晶水,最终产物为氧化镁。生成的气相凝聚物成分比较复杂,主要是二苯甲酮、蒽醌。Magnesium phthalate dihydrate was synthesized by rheological phase reaction.The constituents and crystal structure were determined by XRD,IR,DTA,TG,etc.Its thermal decomposition mechanism in N_2 was studied by TG,DTA.The thermal decomposition products were characterized by XRD,GC-MS.The thermal decomposition of magnesium phthalate dihydrate in N_2 proceeded in two stages,it first lost two molecules of crystal water to form anhydrous salt,then magnesium phthalate decomposed further,the final product was MgO.The organic compounds were mainly benzophenone and anthraquinone.

关 键 词：邻苯二甲酸 流变相反应 热分解 氧化镁 

分 类 号：O611.4[理学—无机化学] O614.22[理学—化学]