三聚磷酸二氢铝与有机胺的插层反应特征

Characteristics of Intercalation Reaction Between Aluminum Dihydrogen Tripolyphosphate and Organic Amine

采用IR、XRD、SEM、EDS、DT-TG和滴定实验等技术手段研究主体三聚磷酸二氢铝(ATP)与客体甲胺、乙胺、正丙胺和正丁胺等有机胺的插层反应特性。实验结果表明,ATP与甲胺、乙胺、正丙胺、正丁胺发生了化学反应,有机胺中的N与ATP层间—OH上的H形成配位键。这些有机胺通过插层反应改变了ATP的酸性、层间距和热分解温度,但没有改变颗粒的层状形貌。层间距从0.795 nm增大至1.71 nm,层间距d与有机胺的碳原子数Cn呈线性关系:d=0.229Cn+0.811,R2=0.9986。有机胺分子链越长则越具有剥离倾向。

The intercalation reaction between aluminum dihydrogen tripolyphosphate （ATP） and organic amine such as methylamine,ethylamine,propylamine and butylamine were characterized by infrared,X-ray diffraction,scanning electron microscopy,energy disperses spectroscopy as well as gravitational thermal analysis and titration experiment.The results show that the organic amine is intercalated into the interlayer of ATP.The interlayer spacing of ATP is extended from 0.795 nm to 1.71 nm by intercalation of organic amine.The interlayer spacing of the intercalation compound is linear to the carbon number（Cn） of organic amine with d =0.229Cn ＋0.811 and R^2 =0.9986.Long molecule chains result in stripping tendency of the intercalation compounds.The acidity and thermal decomposition temperature of ATP are also changed after the intercalation of organic amine,but all layered particle morphologies are similar.