Preparation and Mechanism Analyses of Kaolinite/Pyridine N-oxide Compound

Using a kaolinite/DMSO intercalation compound as a precursor,a kaolinite/ pyridine N-oxide intercalation compound was prepared by microwaves.The product was characterized by XRD and FT-IR.The results show that the basal spacing of kaolinite/pyridine N-oxide intercalation compound is 1.251nm.The apparent intercalation of the product reaches 72.2%.According to that,mechanism analyses of pyridine N-oxide intercalating kaolinite were provided in the paper. The N-O group of pyridine N-oxide hydrogen-bonded to the inner surface hydroxyls of the kaolinite.The pyridine N-oxide was appeared to be in an approximately perpendicular position and formed a single layer in the lamination of kaolinite.