Guimarães JL, Peralta-Zamora P, Wypych F
Department of Chemistry, Federal University of Paraná, Curitiba, PR, CEP 81531-990, Brazil
J Colloid Interface Sci. 1998 Oct 1;206(1):281-287. doi: 10.1006/jcis.1998.5728.
Kaolinite (K) was reacted with phenylphosphonic acid (PPA) in a water:acetone (1:1 V/V) solution (molar ratio 1 K:3 PPA), at 95 +/- 5 degreesC for different periods of time. Two different compounds (white powders) were identified but only one was isolated as a single phase and characterized by X-ray diffraction (powder method), thermal analysis (TG-DSC), Fourier-transformed infrared spectroscopy, and chemical analysis. The first compound showed a layer expansion of 7.86 Å and the second, a layer expansion of 9.29 Å, obtained as a decomposition product. Both compounds are consistent with the grafting of the phenylphosphonate group to the layers of kaolinite. The compounds have a formula of Al2Si2O5(OH)(HO3PPh)3.0 . 2H2O, as determined by thermal (water and total organic matter loss) and chemical (C content) analysis, respectively. Copyright 1998 Academic Press.
高岭土（K）与苯基膦酸（PPA）在水：丙酮（1:1 V/V）溶液（摩尔比1 K:3 PPA）中，于95±5℃下反应不同时间。鉴定出两种不同的化合物（白色粉末），但仅分离出一种单相化合物，并通过X射线衍射（粉末法）、热分析（TG-DSC）、傅里叶变换红外光谱和化学分析对其进行了表征。第一种化合物的层间距扩展为7.86 Å，第二种化合物作为分解产物，层间距扩展为9.29 Å。两种化合物均与苯基膦酸酯基团接枝到高岭土层上的情况相符。通过热分析（水和总有机物损失）和化学分析（碳含量）分别确定，这些化合物的化学式为Al2Si2O5(OH)(HO3PPh)3.0·2H2O。版权所有1998年学术出版社。
