POLYCRYSTALLINE BROWNMILLERITE-BASED FUSED PRODUCT Russian patent published in 2022 - IPC C04B35/26 C04B35/653 B01J32/00 B01J23/78 

FIELD: chemistry.

SUBSTANCE: invention relates to a fused brownmillerite-based polycrystalline product applied as a catalyst substrate. Claimed material consists, at more than 95% of the mass thereof, of the elements Ca, Sr, Fe, O, M and M’, wherein the content of said elements is determined 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, 0.75≤t≤1.10 and u≤0.2, 0.95≤y+z≤1.10, and 0.95≤t+u≤1.10, and X stands for Ca or Sr or a mixture of Ca and Sr, M stands for an element selected from the group consisting of La, Ba, and mixtures thereof, M’ stands for an element selected from the group consisting of Ti, Cu, Gd, Mn, Al, Sc, Ga, Mg, Ni, Zn, Pr, In, Co, and mixtures thereof, wherein the sum of the atomic indices of Ti and Cu is less than or equal to 0.1.

EFFECT: high degrees of conversion in the oxidation reaction of CO to CO₂ with the lowest possible reaction temperatures.

15 cl, 6 tbl