文献类型：专利

英文题名：Preparation of ordered and two-hole anatase titanium dioxide by preparing alkaline solution, adding tetrabutyl orthotitanate dropwise, hydrolyzing mixture, washing precipitate with water, vacuum filtering, drying precipitate, and roasting

作者：CENG T;CHENG Z;FAN Q;YUAN P;ZHOU Z

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN101481139-A

申请日：2009-02-24

公开日：2009-07-15

语种：英文

收录：DERWENT

摘要：NOVELTY - Ordered and two-hole anatase titanium dioxide is prepared by preparing alkaline solution comprising sodium hydroxide or 10-40% ammonia and distilled water, and adjusting pH of the solution to 9-13; adding tetrabutyl orthotitanate (TBOT) to the alkaline solution dropwise at 0.25-1 mL/minute where the volume ratio of TBOT an alkaline solution is 1:5 to 1:15, and hydrolyzing at 20-70 degrees C for 1-4 hours; washing precipitate repeatedly with distilled water, and vacuum filtering to separate precipitate from the solution; and drying precipitate at 20-25 degrees C, and roasting at 350-650 degrees C. USE - Method of preparing ordered and two-hole anatase titanium dioxide (claimed). ADVANTAGE - The method is easy to operate and does not need to add more surface active agent and temple-directing agent. The produced titanium dioxide has good thermal stability.