Materials for solid-state gas sensors

Details Materials for solid-state gas sensors Materials for solid-state gas sensors

C - Chemistry, Metallurgy

01

G

C01G 45/00 (2006.01) C01G 49/00 (2006.01) G01N 27/12 (2006.01) G01N 33/00 (2006.01)

Patent

CA 2339994

Solid-state compositions defined by one of the following formulae: a binary oxide of the formula Cr2-xMxO3 with M=Fe or Mn and 0.005x1.95; a ternary oxide of the formula Cr2-x(M1zM21-z)xO3 with M1=Fe or Mn, M2=Fe, Mn or A1, 0.005x1.95 and 0.005z0.995; a ternary oxide of the formula Cr2-x(M1zM21-z)xO3 with M1=Fe or Mn, M2=Ti and 0.005x1.95, and 0.005z0.45; a quaternary or quinternary oxides of the formula Cr2-x((M1aM2bM3c)zM41-z)xO3 with M1=Fe, M2=Mn, M3=A1 and M4=Ti, and Oa,b,c1, 0.005x1.95, and 0.005z0.45; and their use as gas sensors.

L'invention concerne des compositions à semi-conducteurs définies par un oxyde binaire représenté par la formule Cr¿2-x?M¿x?O¿3? où M=Fe ou Mn et 0,005?x?1,95; un oxyde ternaire représenté par la formule Cr¿2-x?(M1¿z?M2¿1-z?)¿x?O¿3? où M1=Fe ou Mn, M2=Fe, Mn ou A1, 0,005?x?1,95 et 0,005?z?0,995; un oxyde ternaire représenté par la formule Cr¿2-x?(M1¿z?M2¿1-z?)¿x?O¿3? où M1=Fe ou Mn, M2=Ti et 0,005?x?1,95, et 0,005?z?0,45; et un oxyde quaternaire ou quinternaire représenté par la formule Cr¿2-x?((M1¿a?M2¿b?M3¿c?)¿z?M4¿1-z?)¿x?O¿3? où M1=Fe, M2=Mn, M3=A1 et M4=Ti, et O?a,b,c?1, 0,005?x?1,95, et 0,005?z?0,45. L'invention concerne également l'utilisation de ces capteurs de gaz.

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