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采用纳米化学制备技术合成了新型的纳米复合团体超强酸催化剂ＳＯ４２－／ＣｏＦｅ２Ｏ４。用ＸＲＤ、ＴＥＭ、ＸＰＳ、红rrrrrrrrrn外光谱和比表面测定等技术研究了该催化剂的结构形态，结果表明：所研制的ＳＯ４２－／ＣｏＦｅ２Ｏ４催化剂为晶态纳rrrrrrrrrn米粒子（＜ ５０ｎｍ），比表面积很大（１５７ｍ２· ｇ－１），ＳＯ４２－与氧化物的金属离子呈无机双齿螯合状配位化合物的结rrrrrrrrrn合形式。以乙酸乙酯合成为模型反应考察了该催化剂的催化活性，比较了酸性和酸强度，推断出该催化剂的酸rrrrrrrrrn强度Ｈ０＜－１４．５。
A new type of nanostructured superacid SO42- / CoFe2O4 was synthesized by nanotechnology. The structure of the catalyst was characterized by XRD, TEM, XPS, IR spectra and specific surface area measurements. The results showed that the developed The SO42- / CoFe2O4 catalyst is a crystalline nano-particle (<50nm) with a large specific surface area (157m2 · g-1), SO42- The metal ions of the oxide are in the form of a combination of inorganic bidentate chelate complexes. The catalytic activity of this catalyst was investigated with ethyl acetate synthesis as a model reaction. The acidity and acid strength were compared, and the strength of the catalyst was deduced H0 <-14.5.