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在60℃下,高岭石与二甲基亚砜反应制备高岭石/二甲基亚砜插层复合物,使用X衍射分析、热分析、红外光谱分析对其进行表征。在140℃下,苯甲酰胺与高岭石/二甲基亚砜插层复合物反应4 d,得到高岭石/苯甲酰胺插层复合物,对其进行表征,然后与高岭石/二甲基亚砜插层复合物进行对比。结果表明:在没有二甲基亚砜作为前驱体的情况下,苯甲酰胺不能与高岭石直接进行反应;高岭石/苯甲酰胺插层复合物结构的稳定性好,是由于苯甲酰胺插层内羰基中的氧原子与高岭石层间表面上的铝硅酸盐形成氢键。
Kaolinite / dimethylsulfoxide intercalation complexes were prepared by the reaction of kaolinite with dimethyl sulfoxide at 60 ℃, and characterized by X-ray diffraction, thermal analysis and FTIR. The benzamide was intercalated with kaolinite / dimethylsulfoxide complex at 140 ℃ for 4 days to obtain a kaolinite / benzamide intercalation complex, which was characterized and then reacted with kaolinite / Dimethyl sulfoxide intercalation complexes for comparison. The results show that benzamide can not directly react with kaolinite in the absence of dimethyl sulfoxide as a precursor. The structural stability of kaolinite / benzamide intercalation complexes is good because The oxygen atoms in the carbonyl group in the amide intercalator form hydrogen bonds with the aluminosilicate on the interlamellar surface of the kaolinite.