公开(公告)号：US06306361B1

公开(公告)日：2001-10-23

申请号：US09520680

申请日：2000-03-07

申请人： Dong-Woo Shin ,  Bub-Jin Kim

发明人： Dong-Woo Shin ,  Bub-Jin Kim

IPC分类号： C01G23047

CPC分类号： B01J21/063 ,  B01J35/002 ,  B01J35/004 ,  C01G23/0532 ,  C01G23/08 ,  C01P2004/32 ,  C01P2004/50 ,  C01P2006/12

摘要： A method for manufacturing an inexpensive and safe titanium dioxide powder having an excellent photocatalytic ability and a high purity of anatase phase crystalline structure by utilizing meta-titanic acid as a starting material is disclosed. Meta-titanic acid is first neutralized by a basic solution, followed by adding a metal oxide. Then, the meta-titanic acid is spray dried using hot air to obtain spherical shape granules. The granules are then sintered to obtain the resulting titanium dioxide powder having small sized porous second particles and a high specific surface area. As a result, an economical and highly effective photocatalytic titanium dioxide powder can be obtained.

摘要翻译： 公开了一种通过利用偏钛酸作为原料制造具有优异的光催化能力和高纯度锐钛矿相晶体结构的廉价且安全的二氧化钛粉末的方法。 首先用碱性溶液中和次钛酸，然后加入金属氧化物。 然后，使用热空气对间 - 钛酸进行喷雾干燥，得到球状颗粒。 然后将颗粒烧结，得到具有小尺寸多孔第二颗粒和高比表面积的所得二氧化钛粉末。 结果，可以获得经济且高效的光催化二氧化钛粉末。