【Abstract】 Mg-Al hydrotalcites with different Mg/Al ratios and their polyoxometalateintercalates were synthesized by direct ion-exchange reactions. The porous structures ofthe pillared products were studied by adsorbing various molecules with different, kineticdiameter on them. The results show that the porous structures of the pillared productscan be adjusted either by changing the layer charge densities or by changing the pillardensities, i. e. the pore diameter will increase with the increament of the Mg atoms inthe layers and the polyoxometalate charges in the gallery.更多还原