| Nanometer ZrO2, a functional inorganic material, is not only possess the characters of acidity, alkalinity and redox, but also possess the special characters such as high temperature resistant, corrosion proof and antifriction. It can apply to many kinds of chemical reaction as catalyst due to its special highly activity and excellent selectivity. Nanometer ZrO2 is not only an acidic catalyst, but also can burdening super acid to prepare SO42-/ZrO2 solid acid catalyst in order to be used for multiphase reaction, so it is a really environment amicability catalyst. On the other hand, it also has many disadvangtages, such as easily coacervation, bad dispersibility etc, those cause it could not exert its effect fully. Therefore, those scholars who work on catalysis are work hard in order to solve this problem. In addition, the surface acidity of Nanometer ZrO2 is relatively weak, this character is also restrict its widely used in acidic catalysis reaction.In this paper, we chose microemulsion method and adopted amphiprotic surfactant to prepare high dispersibility nanometer ZrO2, then explored the relations between pore size distribution and dispersibility of nanometer ZrO2 . We prepared nanometer ZrO2 and solid super acid SO42-/ZrO2 which has many advantages, such as large specific surface area, small grain size and strong surface acidity.We studied on nanometer ZrO2 preparation of different surface characteristics, grain size, and crystal structure, then analyzed the structure influencing factors of nanometer ZrO2 surface acidity, those are valuable for offering theoretic and practical reference in application of acidic catalysis reaction.
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