Tang Wu-fei, Gu Xiao-yu, Zhang Sheng, Yuan Hong-fu, Jiang Yu, Zhao Jing-ran
Guang Pu Xue Yu Guang Pu Fen Xi. 2015 Feb;35(2):462-5.
Thepotassium dihydrogenphospiate (KDP) intercalated kaolinite (K-KDP) was prepared by a three-step reaction. Firstly, polar dimethyl sulphoxide (DMSO) was introduced into the layers of kaolinite by ultrasonic method and the product K-DMSO was obtained as precursor; secondly DMSO was replaced by potassium acetate (KAc) and the product K-KAc was gotten as intermediate; finally KAc was replaced by KDP. The intercalation ratio of the final product K-KDP reached 81.3%. The structure of products at differentreaction process was characterized by Fourier-transformed infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscope (SEM) in detail. FTIR results showed the existence of P==O in the final product but moved from 1300 to 1201 cm(-1). XRD results documented that the interlayer spacing of kaolinite was enlarged during the whole intercalation reaction. SEM indicated that the agglomeration of kaolinite was destroyed and the particle size distribution became more uniform.
通过三步反应制备了磷酸二氢钾（KDP）插层高岭土（K-KDP）。首先，采用超声法将极性二甲基亚砜（DMSO）引入高岭土层间，得到产物K-DMSO作为前驱体；其次，用醋酸钾（KAc）取代DMSO，得到产物K-KAc作为中间体；最后，用KDP取代KAc。最终产物K-KDP的插层率达到81.3%。利用傅里叶变换红外光谱（FTIR）、X射线衍射（XRD）和扫描电子显微镜（SEM）对不同反应过程的产物结构进行了详细表征。FTIR结果表明，最终产物中存在P==O，但从1300 cm(-1)移至1201 cm(-1)。XRD结果表明，在整个插层反应过程中高岭土的层间距增大。SEM表明高岭土的团聚被破坏，粒径分布变得更加均匀。
