US 12,421,132 B2
Sodium ferrite particle powder and production method thereof
Muneyoshi Sakamoto, Otake (JP); Nobuya Shimo, Otake-shi (JP); and Eiichi Kurita, Otake-shi (JP)
Assigned to TODA KOGYO CORP., Hiroshima (JP)
Appl. No. 17/783,860
Filed by TODA KOGYO CORP., Hiroshima (JP)
PCT Filed Dec. 4, 2020, PCT No. PCT/JP2020/045202
§ 371(c)(1), (2) Date Jun. 9, 2022,
PCT Pub. No. WO2021/117623, PCT Pub. Date Jun. 17, 2021.
Claims priority of application No. 2019-223136 (JP), filed on Dec. 10, 2019; and application No. 2020-020916 (JP), filed on Feb. 10, 2020.
Prior Publication US 2023/0029005 A1, Jan. 26, 2023
Int. Cl. C01G 49/00 (2006.01); B01J 20/06 (2006.01)
CPC C01G 49/0027 (2013.01) [B01J 20/06 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A sodium ferrite particle powder, wherein at least one metal or more selected from the metal group consisting of silicon, aluminum, titanium, manganese, cobalt, nickel, magnesium, copper and zinc is contained in an amount of 0.05 to 120% by weight in terms of the oxide, and a molar ratio of Na/Fe is 0.75 to 1.25, wherein an average diameter of primary particles of the sodium ferrite particle powder is 50 to 1000 nm.