	US 11,912,626 B2
	Brownmillerite-based polycrystalline fused product
Helena Kaper, Courthezon (FR); and Pierre-Alexis Repecaud, Saint-Martin de Fraigneau (FR)
Assigned to SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN, Courbevoie (FR); and CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR)
Appl. No. 17/275,539
Filed by SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN, Courbevoie (FR); and CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR)
PCT Filed Sep. 19, 2019, PCT No. PCT/FR2019/052191 § 371(c)(1), (2) Date Mar. 11, 2021, PCT Pub. No. WO2020/058638, PCT Pub. Date Mar. 26, 2020.
Claims priority of application No. 1858500 (FR), filed on Sep. 20, 2018.
Prior Publication US 2022/0033310 A1, Feb. 3, 2022
Int. Cl. C04B 35/26 (2006.01); B01J 23/78 (2006.01); B01J 35/02 (2006.01); C04B 35/653 (2006.01); H01M 4/90 (2006.01); H01M 8/12 (2016.01)

CPC C04B 35/2683 (2013.01) [B01J 23/78 (2013.01); B01J 35/026 (2013.01); C04B 35/653 (2013.01); H01M 4/9033 (2013.01); H01M 4/9075 (2013.01); C04B 2235/3274 (2013.01); C04B 2235/95 (2013.01); H01M 2008/1293 (2013.01)]

17 Claims

1. A polycrystalline fused product based on brownmillerite, consisting, for more than 95% of its weight, of the elements Ca, Sr, Fe, O, M and M′, the contents of said elements being defined by the formula X_yM_zFe_tM′_uO_2.5, wherein the atomic indices are such that 0.76≤y≤1.10, z≤0.21, 0.48≤t≤1.10 and u≤0.52, 0.95≤y+z≤1.10, and 0.95≤t+u≤1.10, X being Ca or Sr or a mixture of Ca and Sr, M being an element chosen from the group formed by La, Ba and mixtures thereof, M′ being an element chosen from the group formed by Ti, Cu, Gd, Mn, Al, Sc, Ga, Mg, Ni, Zn, Pr, In, Co, and mixtures thereof, the sum of the atomic indices of Ti and Cu being less than or equal to 0.1.