【摘要】 在小试基础上，笔者进行了小试放大研究。研究表明：（１）用标准构型搅拌釜，以加料速度ｖ０与器内初始物料体积Ｖ０之比为０．０６２ｓ－１、循环比为１３．２时，ＴｉＯ２粒径小、粒径分布窄，可以作为放大依据。（２）反应物最佳配比为：钛酸正丁酯∶乙醇∶水＝１∶９∶２（摩尔比）。（３）常见金属、玻璃等对水系浸润良好的固体表面，对凝胶化过程有催化作用，放大后因物料比表面积大大降低，催化作用很弱，工业过程可以不加抑制剂。更多还原

【Abstract】 The scale-up of small test for preparation of nanosize TiO 2 by sol-gel method is studied.The test results show that:(1)when the standard stirrer is adopted,the ratio between the feeding velocity(v 0)of sediment agent and the volume of the original material (V 0)is 0.062(s -1 ),the circulating ratio is 13.2,the small particle size of TiO 2 and narrow particle size distribution can be obtained.Which is used as the basis of enlargement;(2)The optimum mole ratio of reaction materials is as following:Ti(OC 4H 9) 4∶C 2H 5OH∶H 2O =1∶9∶2;(3)The solid surface of the metal and glass etc.with well sockage has catalytic action on the process of gelatination,but the catalytic action is weak in the industrial production due to the specific surface of the material greatly decreased after the system to be enlarged.So,the inhibitor need not be added.更多还原