US 7,585,488 B2
Anatase-type titanium oxide powder and method for producing same
Hideki Sakai, Chigasaki (Japan)
Assigned to Toho Titanium Co., Ltd., Chigasaki-shi (Japan)
Appl. No. 10/593,712
PCT Filed Mar. 10, 2005, PCT No. PCT/JP2005/004724
§ 371(c)(1), (2), (4) Date Sep. 21, 2006,
PCT Pub. No. WO2005/092797, PCT Pub. Date Oct. 06, 2005.
Claims priority of application No. 2004-092026 (JP), filed on Mar. 26, 2004.
Prior Publication US 2007/0189958 A1, Aug. 16, 2007
Int. Cl. C01G 23/047 (2006.01); C01G 23/07 (2006.01)
U.S. Cl. 423—613  [423/69; 423/75; 423/76; 423/610; 423/611; 423/612] 10 Claims
OG exemplary drawing
 
1. A method for producing an anatase-type titanium oxide powder comprising preheating titanium tetrachioride, oxygen gas, hydrogen gas, and steam at 450 to 6000° C. and reacting the preheated titanium tetrachioride, oxygen gas, hydrogen gas, and steam in a gaseous phase, wherein the amounts of oxygen gas, hydrogen gas, and steam supplied are respectively 60 to 90 l, 60 to 90 l, and 240 to 400 l per 1 l of titanium tetrachloride gas.