Particle size distributing and the composing of crystal phase were discussed by the orthogonalizing design . the experiments showed that the most suitable process conditions should controlled as follows : process temperature was about 30c ; the ratio of tnb " water and solvent was l : 4 : l 0 : the calcined temperature was about 600 " c . such transition metal ions as fe3 + 实验表明，合适的反应条件是：以醋酸为负催化剂，水解温度应控制在30左右，钛酸丁酯与水量、溶剂量的配比应为1 ： 4 ： 10 。另外得到比较单一的锐钛型tio _ 2煅烧温度应控制在600左右。
