【摘要】 研究了硫酸铵－金属氧化物在不同温度下焙烧的ＦＴＩＲ．结果表明，经硫酸铵浸渍的ＴｉＯ２，Ｆｅ２Ｏ３和ＺｒＯ２样品，随焙烧温度的提高，硫酸根从游离状态转化为双齿键合状态，并配位至氧化物表面的金属原子，形成具有超强酸性的某种表面硫酸根对金属的配合物．而ＣａＯ，ＺｎＯ，Ｌａ２Ｏ３，ＭｎＯ２，Ｎｉ２Ｏ３和Ｍｇｏ等则没有这种现象发生，说明硫酸根不能与这类氧化物发生相互作用．更多还原

【Abstract】 IR spectra of sulfated TiO2, Fe2O3 and ZrO2 capable of being made into superacids and sulfate treated CaO etc. incapable of being made into superacids have been investigated. The results show that the interaction of sulfate with the surface of the oxides has happened for TiO2, Fe2O3 and ZrO2, thus leading to the formation of surface sulfate coordinated metal complexes, essential for the superacidity of the oxides.更多还原