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本文利用Keggin结构可以发生类质同象置换的性质，制备了含过渡金属高于Fe的羟基铁铝往撑蒙脱石。运用紫外-可见吸收光谱、27AI核磁共振港等技术对柱化溶液中Fe和Al的状态进行了研究，运用X射线走向行射技术、红外光谱、顺磁共振等技术对柱化粘土中Keggin结构的作用及热稳定性进行了研究。结果表明，Fe／Al值对羟基铁铝柱化液的结构、d001值、柱化粘土的热稳定性均有较大的影响，随着Fe／Al值的增加，d001逐渐增大，热稳定性下降，过量的Fe对Keggin结构有破坏作用，Keggin结构的存在增加了位化粘土的热稳定性。
In this paper, Keggin structure can occur in the nature of isomorphous substitution, preparation of a transition metal containing Fe than iron hydroxy aluminum pillared montmorillonite. The states of Fe and Al in the pillared solution were studied by ultraviolet-visible absorption spectroscopy and 27AI NMR. The Keggin structure of the pillared clay was characterized by X-ray strike-ray technique, infrared spectroscopy and paramagnetic resonance The role and thermal stability of the studied. The results show that the Fe / Al value has a great influence on the structure of d-Al-Fe-Al column liquid, d001 value and the thermal stability of pillared clay. As the Fe / Al value increases, d001 gradually increases and the thermal stability The property of Keggin structure is destructive when excess Fe is added. The existence of Keggin structure increases the thermal stability of the clay.