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提出了一种以氧化硅层柱磷酸锆(SiO_2-ZrP)的前驱体,氨丙基硅酸酯嵌入磷酸错(APS-ZrP)为载体制备负载氧化铁的氧化硅层柱磷酸锆的新方法.与传统方法相比,新方法制得的样品具有较大的比表面和孔容.X射线粉末衍射(XRD)和程序升温还原(TPR)的结果表明采用新方法有利于氧化铁在载体表面的高度分散,分散阈值为0.25gFe_2O_3/g(SiO_2-ZrP),远超过直接以SiO_2-ZrP为载体浸渍草酸铁铵的传统方法得到样品.同时,用新方法制得的氧化铁催化剂表现了较高的乙苯脱氢活性,是一类值得研究的催化材料.
A new method of preparing iron oxide-loaded silica layer zirconium phosphate using silica-column precursor of zirconium phosphate (SiO_2-ZrP) and aminopropyl silicate embedded phosphoric acid anhydride (APS-ZrP) as support Compared with the traditional method, the sample prepared by the new method has larger specific surface area and pore volume.The results of X-ray powder diffraction (XRD) and temperature programmed reduction (TPR) show that the new method is beneficial to the oxidation of iron oxide on the surface of the support , The dispersion threshold value is 0.25gFe_2O_3 / g (SiO_2-ZrP), which is much higher than that of the conventional method of impregnating ammonium ferric oxalate with SiO_2-ZrP as support.At the same time, the iron oxide catalyst prepared by the new method shows better performance High ethylbenzene dehydrogenation activity is a worthy catalytic material.