Y-modified LDHs with atomic Mg²⁺/(Al³⁺+Y³⁺) of 3 and Al³⁺/Y³⁺ ratios of 0.5, 1 and 1.5 were prepared following two preparation methods, i.e. the co-precipitation and mechano-chemical one. The substitution of Al by Y in the brucite-type layer was less effective for the samples prepared by co-precipitation compared to those prepared via mechano-chemical route. In spite the fact yttrium has a larger ionic radius (0.9Å) the structural characterizations of these solids confirmed that the layered structure incorporates part of it in the octahedral positions. Further, the reconstruction of the layered structure after an exposure to water for 1 h was more effective for the solid prepared by co-precipitation. The yttrium modified LDHs showed better catalytic activities for cyclohexene oxidation to the corresponding epoxide than the un-modified LDH sample. Then, mixed oxides derived from yttrium-LDH showed very high conversions and selectivities for the synthesis of chalcone.

Y型改性的LDH与原子的Mg ²⁺ /（铝³⁺ + Y ³⁺的3）和Al ³⁺ / Y ³⁺的0.5,1和1.5比制备以下两种制备方法，即共沉淀和机械力-化学一。与共沉淀制备的样品相比，在水镁石型层中用Y代替水镁石型Al的效果较差。机械化学路线。尽管钇具有较大的离子半径（0.9Å），但这些固体的结构特征证实了层状结构在八面体位置掺入了一部分。此外，对于通过共沉淀制备的固体，暴露于水1 h后对分层结构的重建更为有效。与未修饰的LDH样品相比，钇修饰的LDH对环己烯氧化为相应的环氧化物表现出更好的催化活性。然后，源自钇-LDH的混合氧化物对查尔酮的合成显示出很高的转化率和选择性。