【摘要】 采用溶胶 -凝胶法 ,以钛酸丁酯为先驱体、乙醇做溶剂、醋酸做抑制剂制备了二氧化钛超细粉。分析了先驱体的化学组成对溶胶和凝胶质量的影响 ,干凝胶的热处理温度、时间等因素对制备二氧化钛超细粉颗粒特性的影响。利用X射线衍射仪、扫描电镜、等方法测试TiO2 粉体的特性。用于麻脱胶废水处理 ,使废水的CODCr值由原来的 2 0 6mg/L降低到 39.6 8mg/L ,达到国家一级排放标准 ,可以回收利用。更多还原

【Abstract】 We prepare superfine powder of TiO 2 by using buttyl titantium [Ti(OC 4H 9)] as precursors, alcohol[CH 3CH 2OH] as solvent, and HAc as buffer. The influences of chemical composition of reacting materials, aged temperature and time of sol and gel, heating treatment temperature, and time of xerogel on particle size of TiO 2 are discussed. We test the properties of the TiO 2 powder by XRD, SEM, and Laser Particle apparatus. The retting hemp waster is treated by the TiO 2 powder, with the COD Cr value decreased from 206?mg/L to 39.68?mg/L.The treated water is reusable, attaining the first degree of Drainage National Standard.更多还原